K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

16 tháng 6 2020

Combine the idea, using a clause of purpose

7. Please arrive early. We want to be able to start the meeting on time.

-> Please arrive early so that we can be able to start the meeting on time
8. I slowed down. I wanted the car behind to be able to overtake.

-> I slowed down so that the car behind could be able to overtake
9. Jackson is planning to take a semester off. He wants to travel in Europe.

-> Jackson is planning to take a semester off to/ in order to/ so as to travel in Europe
10. The man spoke very slowly. He wanted me to understand what he said.

-> The man spoke very slowly so that I could understand what he said
11. I whispered. I didn't want anybody else to hear our conversation.

-> I whispread so that nobody else could hear our conversation
12. I'll give you a map. I want you to find the way all right.

-> I'll give you a map so that you can find the way all right
13. Please be quiet. I want to be able to hear what Sharon is saying.

-> Please be quite so that I can be able to hear what Sharon is saying
14. The little boy pretended to be sick. He wante to stay home from school.

-> The little boy pretended to be sick to/ so as to/ in order to stay home from school
15. I turned off the TV. I wanted my roomate to study in peace and quiet.

-> I turned off the TV so that my roomate culd study in peace and quiet

3 tháng 8 2018

1. combine the following sentences with " so that"

1. he studies very hard. She doesn't want to fail the final examination

She doesn't want to fail the final examination so that she studies very hard.

2. she practices English every day. She wants to speak to foreigners

She wants to speak to foreigners so that she practices English every day.

3. we have to follow more than ten stages . We can make a simple conical hat

we have to follow more than ten stages so that we can make a simple conical hat

4. she bought a new car. She wanted to make a tripto Canada

She wanted to make a tripto Canada so that she bought a new car

5. I got early. I didn't want to be late for school

I didn't want to be late for school so that I got early

6. we lower the volume of the radio . We don't want to brother our neighbours

We don't want to brother our neighbours so that we lower the volume of the radio

7. he driver very carefully. He doesn't want to have any accident

He doesn't want to have any accident he driver very carefully.

8. I spoke English very slow . I wanted the man to understand what I said

I wanted the man to understand what I said I spoke English very slow

9. I whispered . i didn't want anyone to hear our conversation

i didn't want anyone to hear our conversation so that I whispered

10. I slowed down . I wated the car behind to be able to overtake

I wated the car behind to be able to overtake so that I slowed down

21 tháng 2 2017

Combine each pair of sentences, using so that; in order (not) to or so as (not) to

1, He always drives carefully. He doesn't want to cause accidents

He always drives carefully in order not to cause accidents

2, Please arrive early. We want to able to start the meeting on time

Please arrive early so that we are able to start the meeting on time

3, I went to the college. I wanted to see Professor Taylor

I went to the college in order to see Professor Taylor

4, She wore warm clothes. She didn't want to get cold

She wore warm clothes in order not to get cold

5, I closed the window. I didn't want anybody to look at my rooom

I closed the window so that nobody look at my rooom

6, We turned out the lights. We didn't want to waste electricity

We turned out the lights so as not to waste electricity

7, He moved to the front row. He could hear the speaker better

He moved to the front row so as to hear the speaker better

8, I left Dave my phone number. I wanted him to be able to contact me

I left Dave my phone number so that he would be able to contact me

9, Thanh and Nga are going to Australia. They want to learn English

Thanh and Nga are going to Australia so as to ​ learn English

10, We hurried to school. We didn't want to be able

We hurried to school so as not to be late

21 tháng 2 2017

1, He always drives carefully. He doesn't want to cause accidents

=> He always drives carefully in order not to cause accidents

2, Please arrive early. We want to be able to start the meeting on time

=> Please arrive early so that we can start the meeting on time

3, I went to the college. I wanted to see Professor Taylor

=> I went to the college so as to see Professor Taylor

4, She wore warm clothes. She didn't want to get cold

=> She wore warm clothes in order not to get cold

5, I closed the window. I didn't want anybody to look at my room

=> I closed the window so that nobody could look at my room

6, We turned out the lights. We didn't want to waste electricity

=> We turned out the lights in order not to waste electricity

7, He moved to the front row. He could hear the speaker better

=> He moved to the front row so as to hear the speaker better

8, I left Dave my phone number. I wanted him to be able to contact me

=> I left Dve my phone number so that he could contact me

9, Thanh and Nga are going to Austrlia. They want to learn English

=> Thanh and Nga are going to Australia so as to learn English

10, We hurried to school. We didn't want to be able

=> We hurried to school so as not to be able

Bài tập về cụm từ và mệnh đề BÀI TẬP 1: nối câu dùng: so that / in order that / in order to / so as to / to Ex: The boys stood on the desks. They wanted to get a better view. => The boys stood on the desks in order to get a better view. 1) Please shut the door. I don't want the dog to go out of the house. => ......................................................................................................... 2) I wish to have enough money. I want to buy a new house. =>...
Đọc tiếp

Bài tập về cụm từ và mệnh đề
BÀI TẬP 1: nối câu dùng: so that / in order that / in order to / so as to / to
Ex: The boys stood on the desks. They wanted to get a better view.
=> The boys stood on the desks in order to get a better view.
1) Please shut the door. I don't want the dog to go out of the house.
=> .........................................................................................................
2) I wish to have enough money. I want to buy a new house.
=> .......................................................................................................
3) You should walk slowly. Your sister can follow you.
=> .......................................................................................................
4) They did their job well. They hoped the boss would increase their salary.
=> .......................................................................................................
5) We turned on the lights. We didn't want to waste electricity.
=> ........................................................................................................
6) We lower the volume of the radio. We don't want to bother our neighbours.
=> .......................................................................................................
7) The robber changed his address all the time. He didn't want the police to find him.
=> .......................................................................................................
8) The man spoke loudly. He wanted every body to hear him clearly.
=> .......................................................................................................

1
20 tháng 7 2018

Bài tập về cụm từ và mệnh đề
BÀI TẬP 1: nối câu dùng: so that / in order that / in order to / so as to / to
Ex: The boys stood on the desks. They wanted to get a better view.
=> The boys stood on the desks in order to get a better view.
1) Please shut the door. I don't want the dog to go out of the house.
=> Please shut the door so that the dog doesn't go out of the house.
2) I wish to have enough money. I want to buy a new house.
=> I wish to have enough money to buy a new house.
3) You should walk slowly. Your sister can follow you.
=> You should walk slowly so that your sister can follow you.
4) They did their job well. They hoped the boss would increase their salary.
=> They did their job well in order that the boss would increase their salary.
5) We turned off the lights. We didn't want to waste electricity.
=> We turned off the lights in order not to waste electricity.
6) We lower the volume of the radio. We don't want to bother our neighbours.
=> We lower the volume of the radio so as not to bother our neighbours.
7) The robber changed his address all the time. He didn't want the police to find him.
=> The robber changed his address all the time in order that the police didn't find him.
8) The man spoke loudly. He wanted every body to hear him clearly.
=> The man spoke loudly so that everybody heard him clearly.

B. BÀI TẬP 1: Join two sentences into one using “so, so ... that”( nối 2 câu đơn bằng cách sử dụng so / so… that ) 1. Lan and Ba don’t have a tent. They never go camping ................................................................................................................................................... 2. I have to stay at home. I can finish all my exercises. ...
Đọc tiếp

B. BÀI TẬP
1: Join two sentences into one using “so, so ... that”( nối 2 câu đơn bằng cách sử dụng so / so… that )
1. Lan and Ba don’t have a tent. They never go camping
...................................................................................................................................................
2. I have to stay at home. I can finish all my exercises.
...................................................................................................................................................
3. Tan is very slow. He is late for school.
...................................................................................................................................................
4. The weather is fine. We have a picnic on the mountain.
...................................................................................................................................................
5. I don’t have a bike. I walk.
...................................................................................................................................................
6. Nhan is tired. He can’t fly his kites.
...................................................................................................................................................
7. The book is very interesting. I read it twice.
...................................................................................................................................................
8. Jane looks sick. The nurse tells her to go back home to rest.
...................................................................................................................................................
9. The lesson is very difficult. No one can understand it.
...................................................................................................................................................
10. The work is very hard. I can’t finish it on time.
...................................................................................................................................................
2: Join two sentences into one, use SO THAT/ IN ORDER THAT:(Dùng SO THAT / INORDER THAT ĐỂ Nối 2 cặp câu đơn để tạo thành mệnh đề chỉ mục đích)
1. The boy stands on the benches. He wants to see the view better.
→The boy stands on the benches so that he can see the view better.
2. I’ll write to you. I want you to know my decision.
...................................................................................................................................................
3. The man speaks loudly. He wants every one to hear him clearly.
...................................................................................................................................................
4. You should walk slowly. Your sister can follow you.
...................................................................................................................................................
5. John gets up early. he doesn’t want to be late for the class.
...................................................................................................................................................
6. I wish to have enough money. I want to buy a new house.
...................................................................................................................................................
7. She needs a job. She wants to support her old parents.
...................................................................................................................................................
8. She puts on her warm clothes. She doesn’t want to catch cold.
.................................................................
8 phút trước

0
12 tháng 8 2018

Combine each of the following pairs of sentences into one sentence using so as / in order where necesary
1. Mary prepares her lesson carefully. She wants to get high marks in class

=> Mary prepares her lesson carefully so as to get high marks in class
2. the thief changed his address all the time. He didn't want to be foumd by the police

=> the thief changed his address all the time in order not to want to be found by the police
3. They did their job well. They hoped to get a higher salary

=> They did their job well so as to get a higher salary
4. You should walk slowly. You can be followed by your sister

=> You should walk slowly so as to follow by your sister
5. I am studying hard. I want to keep pace with my classmates

=> I am studying hard so as to keep pace with my classmates
6. They are climbing higher. They want to get a better view

=> They are climbing higher so as to get a better view
7. He worked late last night. He wanted to be free to go away tomorrow

=> He worked late last night so as to be free to go away tomorrow
8. Put the milk in the fridge. We want to make sure it won't spoil

=> Put the milk in the fridge so as to make sure it won't spoil

#Yiin - girl ><

12 tháng 8 2018

Combine each of the following pairs of sentences into one sentence using so as / in order where necesary
1. Mary prepares her lesson carefully. She wants to get high marks in class

-> Mary prepares her lesson carefully in order to get high marks in class
2. the thief changed his address all the time. He didn't want to be foumd by the police

-> the thief changed his address all the time so as not to be foumd by the police
3. They did their job well. They hoped to get a higher salary

-> They did their job well so as to get a higher salary
4. You should walk slowly. You can be followed by your sister

-> You should walk slowly in order to be followed by your sister
5. I am studying hard. I want to keep pace with my classmates

-> I am studying hard in order to keep pace with my classmates
6. They are climbing higher. They want to get a better view

-> They are climbing higher so as to get a better view
7. He worked late last night. He wanted to be free to go away tomorrow

-> He worked late last night so as to be free to go away tomorrow
8. Put the milk in the fridge. We want to make sure it won't spoil

-> Put the milk in the fridge in order to make sure it won't spoil

III.Put the verb in brackets into correct form: 1. Last year, we (live) in Nha Trang but now we (live) in Ha Noi with my uncle. 2. Last week I (send) my friend -Daisy a letter but she (not reply). I(be) very sad now. 3. My father (not like) drinking beer but yesterday he (have )two big glasses of beer. He (be) happy to receive my mother’s news. 4. What you (do) yesteday? –I (phone) you but you (not be) in. 5. Last month my brother (send) me his photographs. He (send) his photographs every...
Đọc tiếp

III.Put the verb in brackets into correct form:
1. Last year, we (live) in Nha Trang but now we (live) in Ha Noi with my uncle.
2. Last week I (send) my friend -Daisy a letter but she (not reply). I(be) very sad now. 3. My father (not like) drinking beer but yesterday he (have )two big glasses of beer. He (be) happy to receive my mother’s news.
4. What you (do) yesteday? –I (phone) you but you (not be) in.
5. Last month my brother (send) me his photographs. He (send) his photographs every year.
6. I (think) you (not like) chocolate but it was wrong.
7. Nam is a careful driver but yesterday he (drive) carelessly.
8. What time you (go )to the market yesterday?
9. I (not know) how to dance when I (be) six years old.
10. Do you like swimming Ba ? - I (do) it when I (be) a child but not now.
IV. Join these ideas using “adj. + too / enough + (for O) + to-inf .”:
1. I’m too tired. I can’t go to the cinema this evening.
2. The table was too heavy. I couldn’t move it.
3. The children aren’t tall enough. They can’t reach that shelf.
4. They arrived too late. They didn’t see the beginning of the film.
5. Our old flat was too small. We couldn’t live in it.
6. He spoke too quietly. The people at the back of the room couldn’t hear.
7. The girl is so beautiful and clever . She can be the Miss World.
8. Nam is not tall. He couldn’t play volleyball for the school team.
9. The gas leak was serious.The police evacuated the building.
10. The problem isn’t important. We won’t focus on it.
V.Use the present simple of verbs in brackets:
1. Jet engines (make) a lot of noise.
2. I (not live) in London. I (live ) in Paris.
3. The sea (cover) two-thirds of the world.
4. Loud music (give) me a headache.
5. We ( not come) from Canada. We come from the USA.
6. She (work) from Mondays to Fridays. She (not work) at weekends.
7. Andrew and Les (not go) to school by bus every day. Most morning, Andrew (go) by bike and Les (walk).
8.You(not write) to your penfriend very often, but he (write) to you every week.

B. Exercises:
I. Make request for each situation below:
1. You want to ask your friends to go to the cinema with you :
 .................................................................................
You see a person on the street with a heavy bag and you want to help her : ................................................................................
2. You want to go to a place at 7 o’clock and you want your friend agree with you.
.....................................................................................
II. Find and correct the mistakes in each sentence:
a/ Would you like try some coffee?
b/ Is 9 o’clock is ok?
c/ Can I speak Lan, please.
d/ He’s going to leave for for Bangkok e/ What are you going to do yesterday. f/ Can you to do me a favor ?
g/ Wait a minutes. Hold on!
h/ Let’s us meet outside the cinema i/ I know where is it.
j/ What are you going do?
III- Match A with B:
A
B
1/ Shall we go out dinnet tonight?
2/ Is 8 o’clock, ok?
3/ Would you like to go to the cinema with me? 4/ Can I speak to Nam, please?
5/ Let me help you do the housework.
a/ Yes, that’s fine
b/ That’s a good idea
c/ Certainly
d/ That’s very kind of you. e/ Yes, I’d love to.

IV- Supply verbs in the sentences:
1. Would you like (join) my class next Sunday? We (visit) the local museum.
2. My father likes (read) novel . He always ( read) books after dinner.
3. A friend of my brother (call) him last night, but he (not be) at home. So I (take) a message for him.
4. ( Be ) you busy this evening ?
Yes ,I (meet) Tuan at the library at seven. We (study) together. 5. Mai (telephone) you when she comes back.
V. Complete the sentences with the correct form of words:
1. Trung and his brother like ............ movies very much. (ACT)
2. Bell experimented with ways of transmiting ............ over along distance. (SPEECH)
3. Bell ......... demonstrated his invention . (SUCCESS)
4. Mr Phong made an ........ to see us at two o’clock. (ARRANGE)
5. Thomas Watson was Bell’s ......... ,wasn’t he? (ASSIST)
VI. Fill in the blanks with suitable prepositions:
1. Alexander Graham Bell was born ......March 3nd, 1845 ........... Scotland. 2. He worked .............. deaf- mutes .............Boston University.
3. I’ll come ..............to pick her ..................8 o’clock.
4. Mrs Lam called ................her delivery service.
5. He worked very hard and finally come .......... .......... a very important invention.

0
Exercise 3: Put the verbs in the brackets in the correct tense 1. David will leave for Rent tomorrow if the weather _____ (be) fine. 2. What will you do if you _____ (not / go) away for the weekend ? 3. The game _____ (start) if you put a coin in the slot. 4. If you _____ (be) scared of spiders, don’t go into the garden. 5. We’ll have to go without John if he ( not arrive) _____soon. 6. Please don’t disturb him if he_____ (be) busy. 7. If she _____ (accept) your card and roses, things...
Đọc tiếp

Exercise 3: Put the verbs in the brackets in the correct tense
1. David will leave for Rent tomorrow if the weather _____ (be) fine.
2. What will you do if you _____ (not / go) away for the weekend ?
3. The game _____ (start) if you put a coin in the slot.
4. If you _____ (be) scared of spiders, don’t go into the garden.
5. We’ll have to go without John if he ( not arrive) _____soon.
6. Please don’t disturb him if he_____ (be) busy.
7. If she _____ (accept) your card and roses, things will be very much hopeful.
8. If a holiday_____ (fall) on a weekend, go to the beach.
9. If she (come) _____ late again, she’ll lose her job.
10. If he (wash) _____my car, I’ll give him $20.
11. He’ll be late for the train if he (not start) _____ at once.
12. If I lend you $100, when you (repay) _____me?
13. Unless I have a quiet room I (not be able) _____to do any work.
14. If we leave the car here, it (not be) _____ in anybody’s way.

0
Chia động từ trong ngoặc sao cho thích hợp: 1. Where's Mary? She (listen)______ to a new CD in her room 2. Don't forget to take your umberlla with you today.You know it (be)______ the raining season now 3. Jean always (learn) ______ English at this time every day but to day she (not study)_____ 4.What time _______ (the meeting/happen) tomorrow ? I (not know) ______ it get (i want)_____ for the announcement 5. Where _______(you/live) since you moved from you old house ? 6.Look ! The...
Đọc tiếp

Chia động từ trong ngoặc sao cho thích hợp:
1. Where's Mary? She (listen)______ to a new CD in her room
2. Don't forget to take your umberlla with you today.You know it (be)______ the raining season now
3. Jean always (learn) ______ English at this time every day but to day she (not study)_____
4.What time _______ (the meeting/happen) tomorrow ? I (not know) ______ it get (i want)_____ for the announcement
5. Where _______(you/live) since you moved from you old house ?
6.Look ! The sun (rise) ________ over the ocean.This is the most amazing scene I (ever/see)__________
7. He (speak)___________ Japanese so well because. He (come)___________ from Japan
8. ___________ (you/usually/go) for christmas or ___________ (you/stay) at home ?
9. Look! Your friend (hold) ___________ some roses.They (look)___________ lovely
10.___________ (you,finish)your assignement yet?No I ___________
11. My father usually (walk) ___________ to work but now hw (drive)___________ his car
12. I (not think) ___________ Mary (sleep)___________ because I can hear some noise from her room
13. My grandparents (bring) ___________ me up since I was very small
15. James (always/complain)___________ It (be) ___________ hard to plase him
16. I (just/realize) ___________ that there are only four weets to the end of them
17. This is the second time I (be) ___________ to London
18. Now the children (not want) ___________ to go to sleep.They (prefer) ___________ their mother to tell them bedtime stories.
19. ___________ (they/want) a horror movie before? yes, thay (watch)___________ a plenty of such movies before
20. Jim (cook) ___________ so tired now.He (work)___________ non-stop since the morning

0
1. She pretended ……..me when I passed by.A. not to see B. not seeing C. to not see D. having not seen2. Go on…… the other exercise after you have finished this one.A. to do B. doing C. with D. to be doing3. I don’t regret ….. even if it might have upset her.A. to tell her what I thought B. to have told her what I thoughtC. telling her what I thought D. telling what I thought4. It was so cold that they kept the fire……. all night.A. to burn B. burn C. burning D. burned5. Though he...
Đọc tiếp

1. She pretended ……..me when I passed by.
A. not to see B. not seeing C. to not see D. having not seen
2. Go on…… the other exercise after you have finished this one.
A. to do B. doing C. with D. to be doing
3. I don’t regret ….. even if it might have upset her.
A. to tell her what I thought B. to have told her what I thought
C. telling her what I thought D. telling what I thought

4. It was so cold that they kept the fire……. all night.
A. to burn B. burn C. burning D. burned
5. Though he had often made his sister……. , today he was made ……. by his little sister.
A. cry/to cry B. crying/crying C. cry/cry D. to cry/cry
6. No one told her……. .
A. what to do B. what she does C. to do what D. what she to do
7. It is necessary …… his father everything.
A. to tell B. tell C. telling D. to be told.
8. –“Le’s have a break.” - “Not now .I didn’t want to stop…… . “
A. study B. to study C. for studying D. studying
9. She enjoyed….. the violin in the morning.
A. practicing playing B. practicing to play C. to practice playing D. to practice to play
10. My father is considering …….. his job.
A. to change B. change C. changing D. changed
11. The bird was lucky that it missed …….. 
A. catching B. to be caught C. being caught D. to catch
12. I prefer ….. the book at home to…… the boring film.
A. reading/seeing B. to read/see C. read/seeing D. reading/see
13. His parents wouldn’t allow him …… across the big river.
A. to risk swimming B. risking to swim C. for risk to swim D. risking swimming
14. I can’t imagine …. that with them.
A. do B. to do C. being done D. doing
15. It is no use …….what has been done.
A. to regret B. regretted C. regretting D. regret
16. They looked forward very much to ……. him again.
A. be meeting B. have met C. meeting D. meet
17. Would you mind…… your radio a little, please ?
A. turn off B. turning off C. to turn down D. turning down
18. Do you remember ……. me at a party last year ?
A. meet B. to meet C. met D. meeting
19. Our TV set is out of order and needs…… .
A. repairing B. repaired C. to be repaired D. A & C
20.- “ What happens to your shoes ? “ - “ They want…….. “ 
A. to mend B. mending C. being mended D. mended
21. I never forget …. the beautiful place for the first time.
A. visit B. visiting C. visited D. to visit
22.The mice are too clever ….. in traps.
A. to catch B. to be caught C. being caught D. catching
23. I found the story difficult…… .
A. to be understood B. to understood C. to understand D. for being understood
24. I’m busy now. I’m sorry I can’t help ….. the flowers.
A. to water B. watering C. watered D. waters
25. Coal can be used ……. electricity for human beings.
A. produce B. producing C. to produce D. produced
26. We are allowed …. games on Sundays.
A. to play B. playing C. play D. for playing 
27. He is said……. in America when he was young.
A. to have worked B. working C. to work D. having worked
28. The teacher asked me if I knew …… the machine.
A. to operate on B. how operating C. operating D. how to operate
29. It’s very hot. I feel like…… something cool.
A. to drink B. a drink C. a little drinking

1
8 tháng 8 2019

1. She pretended ……..me when I passed by.
A. not to see B. not seeing C. to not see D. having not seen
2. Go on…… the other exercise after you have finished this one.
A. to do B. doing C. with D. to be doing
3. I don’t regret ….. even if it might have upset her.
A. to tell her what I thought B. to have told her what I thought
C. telling her what I thought D. telling what I thought

4. It was so cold that they kept the fire……. all night.
A. to burn B. burn C. burning D. burned
5. Though he had often made his sister……. , today he was made ……. by his little sister.
A. cry/to cry B. crying/crying C. cry/cry D. to cry/cry
6. No one told her……. .
A. what to do B. what she does C. to do what D. what she to do
7. It is necessary …… his father everything.
A. to tell B. tell C. telling D. to be told.
8. –“Le’s have a break.” - “Not now .I didn’t want to stop…… . “
A. study B. to study C. for studying D. studying
9. She enjoyed….. the violin in the morning.
A. pracing playing B. pracing to play C. to prace playing D. to prace to play
10. My father is considering …….. his job.
A. to change B. change C. changing D. changed
11. The bird was lucky that it missed …….. 
A. catching B. to be caught C. being caught D. to catch
12. I prefer ….. the book at home to…… the boring film.
A. reading/seeing B. to read/see C. read/seeing D. reading/see
13. His parents wouldn’t allow him …… across the big river.
A. to risk swimming B. risking to swim C. for risk to swim D. risking swimming
14. I can’t imagine …. that with them.
A. do B. to do C. being done D. doing
15. It is no use …….what has been done.
A. to regret B. regretted C. regretting D. regret
16. They looked forward very much to ……. him again.
A. be meeting B. have met C. meeting D. meet
17. Would you mind…… your radio a little, please ?
A. turn off B. turning off C. to turn down D. turning down
18. Do you remember ……. me at a party last year ?
A. meet B. to meet C. met D. meeting
19. Our TV set is out of order and needs…… .
A. repairing B. repaired C. to be repaired D. A & C
20.- “ What happens to your shoes ? “ - “ They want…….. “ 
A. to mend B. mending C. being mended D. mended
21. I never forget …. the beautiful place for the first time.
A. visit B. visiting C. visited D. to visit
22.The mice are too clever ….. in traps.
A. to catch B. to be caught C. being caught D. catching
23. I found the story difficult…… .
A. to be understood B. to understood C. to understand D. for being understood
24. I’m busy now. I’m sorry I can’t help ….. the flowers.
A. to water B. watering C. watered D. waters
25. Coal can be used ……. electricity for human beings.
A. produce B. producing C. to produce D. produced
26. We are allowed …. games on Sundays.
A. to play B. playing C. play D. for playing 
27. He is said……. in America when he was young.
A. to have worked B. working C. to work D. having worked
28. The teacher asked me if I knew …… the machine.
A. to operate on B. how operating C. operating D. how to operate
29. It’s very hot. I feel …drink… something cool.
A. to drink B. a drink C. a little drinking