Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
1) she doesn't accept his proposition
---> he wishes...she accepted his proposition......
2) we will watch the film in three hours
--->It will ....take us three hours to watch the film....
3) we can solve this math in five minutes
---> This math...can be solved in five minutes.....
4) It rains heavily,so we can't go to the beach
---> because of....heavy rain, we can't go to the beach......
5) unless you learn hard, you won't pass the exam
---> If....you learn hard, you will pass the exam......
6) although Mrs.Thoa was tired, she helped Tuan with his homework
---->In spite of...being tired, mrs thoa helped Tuan with his homework.....
7) He is too young to go to school
----> He isn't...old enough to go to school.....
![](https://rs.olm.vn/images/avt/0.png?1311)
I. Find the mistake:
1. If you study hard you would => will be a good doctor
2. That man drives carefully => carelessly so he has got an accident
3. If you come => go to school late, you won't finish your test ( hình như câu này không sai. )
4. We suggest that garbage should => should be put on the garbage bins
5. Peter was tired and sleepy last night. Therefore => However, he tried to finish his week
6. My aunt has begun taught => teaching English for twenty years
II: Join the pairs of sentences together. Use a connector:
1. Solar panels are placed on the roof of the house. ( Câu kia đâu? )
2. He is tired. He has to finish his homework
=> He is tired but he has to finsh his homework.
3. The weather is bad. They went for a walk
=> The weather is bad, however, the went for a walk.
4. He forgot his umbrella. He got wet
=> He forgot his umbrella so he got wet.
5. You can't leave here. You don't give me the answer
=> You can't leave here if you don't give me the answer.
6. Would ou like to eat noodles, soup___or___ just a drink?
7. She went to the market for long. She bought nothing
=> She went to the market for long but she bought nothing.
III: Make a suggestion for the following cases:
1. People throw plastic bags everywhere
=> They should put plastic bags in trash can for recycling.
2. She always turns on the lights when going to bed
=> She should turn off the light when going to bed to save electricity.
3. There are many cracks in your pipe
=> You should call for a plumber in order to repair it.
4. They use many ordinary 100 watt light bulb
=> They should use energy-saving bulb so as to save electricity.
5. Tim has a bad toothache
=> He should go to the dentist.
6. People waste losts of gas and oil on cooking
=> They should reduce the amount of gas and oil on cooking.
7. She failed her final exam
=> She should study harder.
8. The area around the beach is full of trash
=> They shouldn't throw trash to the area around the beach.
9. people use their own cars to go to work and make the traffic heavier
=> They should use public transport instead.
10. Today, more people catch fish by using dynamite
=> They should use fishing rod instead.
11. The students in this school throw plastic bags everywhere in the yard
=> They should collect plastic bags for recycling.
12. The goverment hasn't done anything to the pollution here
=> They should have suitable policies to reduce to pollution here.
![](https://rs.olm.vn/images/avt/0.png?1311)
2 Combine the sentence with the word in brackets:
1. Ba got wet because He forgot his umbrella. (because)
2. It's raining so I can't go to the beach. (so)
3. Nam is very tired ;however, he has tó finish his homework before going to bed. (however)
4. Hoa didn't pass her Math test ,so she had to do the test again. (so)
5. I'd like to play soccer with you;however, I have to finish my homework first. (however)
6. The Australians enjoy Christmas although Christmas season is in summer. (although)
7. He likes playing ches and watching TV. (and)
8. Hurry up or we'll be late for the bus. (or)
2 Combine the sentence with the word in brackets:
1. Ba got wet BECAUSE He forgot his umbrella. (because)
2. It's raining SO I can't go to the beach. (so)
3. Nam is very tired. HOWEVER He has tó finish his homework before going to bed. (however)
4. Hoa didn't pass her Math test SO She had to do the test again. (so)
5. I'd like to play soccer with you.HOWEVER I have to finish my homework first. (however)
6. The Australians enjoy Christmas ALTHOUGH Christmas season is in summer. (although)
7. He likes playing chess AND watching TV. (and)
8. Hurry up OR We'll be late for the bus. (or)
![](https://rs.olm.vn/images/avt/0.png?1311)
1. we can't go out because he has to study for his exam.
=>if..he didn't have to study for his exam,he could go out....
2.she is lazy so she can't pass the exam.
=>if.....she weren't lazy, she could pass the exam.......
3.he will pay me tonight;i will have enough money to buy a car.
=>if.....he pays me tonight.i will have enough money to buy a car....
4.he smokes too much; that's why he can't get rid of his cough.
=>if...he didn't smoke too much, he could get rid of his cough...
5.she is very shy , so he doesn't enjoy the party.
=>if.....she weren't shy , he enjoyed the party.......
![](https://rs.olm.vn/images/avt/0.png?1311)
Rewrite the following sentences beginning the words given
1. Mr. Long doesn't have a car so he goes to work by bus
If....Mr.Long had a car, he wouldn't go to work by bus......
2. I'm not a billionaire, so I can't travel around the world
If....I were a billionare, I could travel around the world......
3. We can't get the ticket because I don't have the right change
If....we had the right change, we could get the ticket.......
4. He can't go out because he has to study for his exam
If.....he didn't have to study for his exam, he could go out.......
5. She is lazy so she can't pass the exam
If......she weren't lazy, she could pass the exam.....
6. He smokes too much; that's why he can't get rid of his cough
If.....he didn't smoke too much, he could get rid of his cough.......
7. She is very shy, so she doesn't enjoy the party
If.....she weren't very shy, she would enjoy the party......
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu ước :
1/ The weather isn't nice today.
→ I wish ....the weather were nice today......................
2/ I have to do a lot of homework today
-> I wish ...i didn't have to do a lot of homework today.......................
3/ My father smokes very often.
→ I wish ...my father didn't smoke very often.....................
4/ We live in a small house.
→ We wish ..we didn't live in a small house........................
5/ I don't have a longer vacation.
-> I wish ...i had a longer vacation.........................
6/ They don't stay in Hue
-> They wish .....they stayed in Hue.....................
7/ There aren't any apples in the fridge.
-> I wish ......there were some apples in the fridge........................
8. He can't pass the examination.
-> He wishes.....he could pass the examination.....................
9. We can't go out because of heavy rain.
→ We wish.....we could go out ............................
10. What a pity! He can't come here.
-> I wish.....he could come here...........................
11. Lan is sorry that she can't go to the movie tonight.
-> Lan wishes.....she could go to the movie tonight..........................
12. I don' know how to use an lpad.
-> I wish...i knew how to use an lpad..............................
13. Doan is not tall enough to play basketball.
-> Doan wishes ...he were tall enough to play basketball......................
14. He doesn't help his mother with housework.
-> I wish...he helped his mother with housework..........................
15. I don't have enough money to help you.
-> I wish...i had enough money to help you........................
16. My brother is too short to play basketball.
-> I wish....my brother weren't short to play basketball. ......................
17. My grandmother doesn't stay with me.
-> I wish....my grandmother stayed with me.........................
18. He can't swim very well
-> He wishes.....he could swim very well....................
19. My brother doesn't have a good job.
-> My brother wishes....he had a good job............ .....
20. I don't know how to speak French.
-> I wish....i knew how to speak French.............. ....
Câu điều kiện :
1. Rewrite the following sentences in such a way that they don't change the meaning
1. He doesn't have the money and he can not afford a new car.
-> If......he had the money ,he could afford a new car....................
2. I cannot go to the beach with you because I have a date with my old classmate.
-> If.....i didn't have a date with my old classmate,i could go to the beach with you....................
3. I never get very lonely because I have lots of good friends.
-> If....i didn't have lots of good friends,i would get very lonely.....................
4. The match can be cancelled because it rains heavily.
-> If.....it didn't rain heavily,the match couldn't be cancelled....................
5. Because Simon doesn't live near his mother, he can't visit her often.
-> If.....Simon lived near his mother, he could visit her often.....................
6. I don't have free time, so I can't go to see him.
-> If....i had free time,i could go to see him.....................
7. I am poor, I can't travel around the world.
-> If...i weren't poor,i could travel around the world.......................
8. I am not a millionaire, I can't help all people.
-> If....i were a millionaire,i could help all people..............................
9. I am not old enough; I can't decide my own life.
-> If...i were old enough,i could decide my own life.
10. I am very tired so I can't finish my work.
-> If....i weren't very tired,i could finish my work...............................
2. Rewrite the sentences with If
1. Stop using dynamite for fishing and a lot of sea creatures will be well preserved.
-> If people Stop using dynamite for fishing , a lot of sea creatures will be well preserved................................
2 Use less paper and we can save trees in the forest.
-> If we...use less paper,we can save trees in the forest...............................
3. Plant more trees along the streets and we will have more shade and fresh air.
-> If we Plant more trees along the streets , we will have more shade and fresh air.
4. Work hard and we'll make this beach a clean and beautiful place again.
-> If we Work hard ,we'll make this beach a clean and beautiful place again
5. Keep our environment clean and we'll live a happier and healthier life.
-> If we Keep our environment clean ,we'll live a happier and healthier life.
6. Ba isn't rich so he can't travel around the world.
-> If Ba were rich,he could travel around the world
7. Mr. Loc doesn't have a car so he doesn't drive it to work.
-> If Mr. Loc had a car,he would drive it to work.
8. Nam doesn't arrive at school on time because he doesn't have an alarm clock.
->If Nam had an alarm clock,he would arrive at school on time
9. Tuan can't get better grades because he doesn't study harder.
-> If Tuan studied harder,he could get better grades
10. I don't meet an alien from outer space so I don't invite her to my home.
-> If I met an alien from outer space ,i would invite her to my home.
I. Complete each sentence with one suitable preposition or connective :
( by; from; in; on; and; if; but; to; from; or; for; since; of; into; because; althought; therefore; however; up; so ; and; at; with )
1. They got married......in......2004
2. They have been married.....since......2004
3., Lan woke up late,...so.......she didn't have time for breakfast.
4. My classmate usually goes out.........on.......Saturday
5.My sister often goes to school..........at......... 7 o'clock
6. I have learnt English....for...........5 years.
7. Mr. Parker is a farmer.....but.........Mrs. Parker is a worker.
8. The ruler is ...BETWEEN......the lamp and the book.
9. The boys help Mr. Packer on the farm.......ALTHOUGH..... he is busy.
10. They got up quite late.......SO...........they missed the trairn.
11. Lan won't go to school........BECAUSE...........she is sick today.
12. The competitions will take place....BETWEEN...........8am and 2p.m.
13. The boy is afraid........OF..........snakes
14. Nga is sick today.......SO.... she won't go to school.
15. They are interested........IN..........buying a new house.
16. Don't worry.....ABOUT.......... the money! I'll lend you.
17, Don't shout at the child.....ALTHOUGH.........he makes a mistake.
18. Ba and Tam usually go fishing.....AT......weekends
19. The bus parked at the parking lot...OF..... waited for people to come back.
20. They have learnt English.....FOR...........many years.
21. She is famous ........FOR...........her beautiful face and sweet voice.
22. Mr. Parker grows maize on his farm.....BUT....... .Mrs. Parker works at a grocery store.
23. Mr. Brown is often worried.....ABOUT........money
24. It was hot........SO.......... turned on the air condition.
25. I'm very proud......OF..........my school.
26. Our little brother took a long nap.......FROM.....2p.m to 6p.m.
27. I haven't seen Mai for a few days. I last saw her......BY.......
Tuesday.
28. The price of petrol will go up.........IN.......November.
29. I will call you........ON...........Wednesday evening.
30. They have lived here........SINCE........2009.
31. The meeting will be.....FROM.......nine to eleven......IN...........the morning.
33. He has learned French........FOR.........5 years.
34. We must be there........BETWEEN.............. 8 am and 9 am
35. He usually does exercises..........IN........the afternoon.
36. He tried hard ..........SO....... he got good grades.
37. She is under 16,......SO.......she is not allowed to ride a motorbike. People usually get together.......∅..........at Christmas.
38. I'll phone you.......ON.......Tuesday morning.........AT.........about 10 o'clock. Isn't it OK.
39. His father dierd........IN........ 2005.
40. They haven't meet each other.........FOR..........a long time.
41. Lan's birthday is......ON............June 18h
42. She passed the exam.....BECAUSE........she is always hard-working
44. Goodbye! See you........ON........Monday
45. She is a kind girl,......BUT........few people like her.
46. It's very nice.........OF........ you to help the old man.
47. She likes mangoes, durians.......and.......... bananas.
ON Sunday afternoons I usually go for a walk.
48...........on........... Sunday afternoon I usually go for a walk.
49. Mr. Brown enjoys walking around his garden.....at..........night.
50. I woke up.........at......... five o'clock......in.......the morning.
![](https://rs.olm.vn/images/avt/0.png?1311)
1. You should have a...........check your motorbike regularly (designer/ plumber/ mechanic/ electrician)
2. He needs a..........to fix the faucet (doctor/ engineer/ worked/ plumber)
3. They........their living by catching fish everyday (did/ made/ had/ took)
4. Who suggested......on camping holiday in October? (go/ goes/ going/ to go)
5. Unless you understand, I.......explain it to you (am/ was/ will/ would)
6. My mother forgot to........the faucet before leaving for work (turn on/ turn over/ turn off/ turn up)
7. If you want to save money, you should...........the amount of water your family uses (increase/ reduce/ repair/ install)
8. Mrs. Ha suggested...........tennis this afternoon (played/ plays/ playing/ to play)
9. He has already been........as a candidate (called/ nominated/ remembered/ said)
10. You should.........the amount of the water your family uses (reuse/ reduce/ rebel/ recycle)
11. We are very worried about............lots of money on energy in our home (spend/ to spend/ spending/ spent)
12. What about...........garbage bins around the school yard? (put/ putting/ puts/ to put)
13. If we.........on wasting water, there will be a shortage of fresh water in a few decades (go/ get/ depend/ turn)
14. Hoa sighed..........when she heard that she failed the test (happily/ sadly/ slowly/ well)
15. Oh, he's running so........that I can't catch up with him (quick/ fast/ slow/ slowly)
16. He shouted and looked...........at me when I broke the vase (angry/ angrier/ angrily/ hungry)
17. I opened the door because I wanted to get some..........air (cold/ new/ fresh/ wet)
18. She broke the vase because she was........ (careful/ carefully/ careless/ carelessly)
19. She has........provide a picnic lunch for us (kind/ kindly/ kindness/ unkind)
20. What is the name of the man..........gave up a lift? (who/ whom/ what/ which)
21. Please turn.........the volume. It's nearly midnight (on/ off/ up/ down)
22. I'm going to throw these old clothes........... (over/ way/ up/ off)
23. Remember to turn.........the lights before going to bed (of/ off/ on/ up)
24. I lost my pen. I have looked.........it for all morning (for/ after/ up/ at)
25. I wear a hat.......I don't want to be sick (because/ but/ therefore/ and)
26. She is very tired..........she has to finish her homework (moreover/ so/ and/ however)
27. She's very intelligent........, she's quite lazy (Therefore/ But/ However/ So)
28. We lost the match.......we tried our best (because/ but/ so/ although)
29. I got wet..........I forgot my umbrella (because of/ because/ but/ and)
30. People..........take physical exercise can live longer (who/ whom/ which/ when)
I. MULTIPLE CHOICE
1. You should have a...........check your motorbike regularly (designer/ plumber/ mechanic/ electrician)
2. He needs a..........to fix the faucet (doctor/ engineer/ worked/ plumber)
3. They........their living by catching fish everyday (did/ made/ had/ took)
4. Who suggested......on camping holiday in October? (go/ goes/ going/ to go)
5. Unless you understand, I.......explain it to you (am/ was/ will/ would)
6. My mother forgot to........the faucet before leaving for work (turn on/ turn over/ turn off/ turn up)
7. If you want to save money, you should...........the amount of water your family uses (increase/ reduce/ repair/ install)
8. Mrs. Ha suggested...........tennis this afternoon (played/ plays/ playing/ to play)
9. He has already been........as a candidate (called/ nominated/ remembered/ said)
10. You should.........the amount of the water your family uses (reuse/ reduce/ rebel/ recycle)
11. We are very worried about............lots of money on energy in our home (spend/ to spend/ spending/ spent)
12. What about...........garbage bins around the school yard? (put/ putting/ puts/ to put)
13. If we.........on wasting water, there will be a shortage of fresh water in a few decades (go/ get/ depend/ turn)
14. Hoa sighed..........when she heard that she failed the test (happily/ sadly/ slowly/ well)
15. Oh, he's running so........that I can't catch up with him (quick/ fast/ slow/ slowly)
16. He shouted and looked...........at me when I broke the vase (angry/ angrier/ angrily/ hungry)
![](https://rs.olm.vn/images/avt/0.png?1311)
Multiple choice
1. You should have a....... check your motorbike regularly (desinger/ plumber/ mechanic/ electrician)
2. He needs a........ to fix the faucet (doctor/ engineer/ worked/ plumber)
3. They...... their living by catching fish everyday (did/ made/ had/ took)
4. Who suggested......... on camping holiday in October? (go/ goes/ going/ to)
5. Unless you understand, I...... explain it to you (am/ was/ will/ would)
6. My mother forgot to........ the faucet before leaving for work (turn on/ turn over/ turn off/ turn up)
7. If you want to save money, you should.......... the amount of water your family uses (increase/ reduce/ repair/ install)
8. Mrs. Ha suggested....... tennis this afternoon (played/ plays/ playing/ to play)
9. He has already been....... as a candidate (called/ nominated/ remembered/ said)
10. You should....... the amount of the water your family uses (reuse/ reduce/ rebel/ recycle)
11. We are very worried about...... lots of money on energy in our home (spend/ to spend/ spending/ spent)
12. What about....... garbage bins around the school yard? (put/ putting/ puts/ to put)
13. If we......... on wasting water, there will be a shortage of fresh water in a few decades (go/ het/ depend/ turn)
14. Hoa sighed....... when she heard that she failed the test (happily/ sadly/ slowly/ well)
15. Oh, he's running so....... that I can't catch up with him (quick/ fast/ slow/ slowly)
16. He shouted and looked........ at me when I broke the vase (angry/ angrier/ angrily/ hungry)
17. I opened the door because I wanted to get some..... air (cold/ new/ fresh/ wet)
18. She broke the vase because she was....... (carefully/ careful/ careless/ carelessly)
19. She has....... provide a picnic lunch for us (kind/ kindly/ kindness/ unkind)
20. What is the name of the man..... gave up a lift? (who/ whom/ what/ which)
21. Please turn....... the volume. It's nearly midnight (on/ off/ up/ down)
22. I'm going to throw these old clothes....... (over/ away/ up/ off)
23. Remember to turn....... the lights before going to bed (of/ off/ on/ up)
24. I lost my pen. I have looked..... it for all morning (for/ after/ up/ at)
25. I wear a hat....... I don't want to be sick (because/ but/ therefore/ and)
26. She is very tied....... she has to finish her homework (moreover/ so/ and/ however)
27. She's very intelligent........, she's quite lazy (therefore/ but/ however/ so)
28. We lost the match...... we tried our best (because/ but/ so/ although)
29. I got wet....... I forgot my umbrella (because of/ because/ but/ and)
30. People....... take physical exercise can live longer ( who/ whom/ which/ when)
#Sửa cho bạn trên chút :
3. They...... their living by catching fish everyday (did/ made/ had/ took)
13. If we......... on wasting water, there will be a shortage of fresh water in a few decades (go/ het/ depend/ turn)
20. What is the name of the man..... gave up a lift? (who/ whom/ what/ which)
![](https://rs.olm.vn/images/avt/0.png?1311)
1. i couldn't do the test because it was difficult
=> Because of the difficult test, I couldn't do it.
2.although he got up early, he was late for the first train
=> In spite of getting up early, he was late for the first train.
3.although english grammar is difficult, we like to study it
=> In spite of the difficulties in English grammar, we like to study it.
4. although he is an excellent doctor, he can't cure lever cancer
=> Despite being an excellent doctor, he can't cure lever cancer.
5. although my friend doesn't have money , she wans to buy that new car
=> Despite not having money,she wants to buy that new car.
6. although mai didn't speak english well, she decided to live in london
=> In spite of not speaking English well, Mai decided to live in London.
7. although he is sick, he goes to school
=> In spite of being sick, he goes to school.
8. although lan was tired, she did all her homwork carefully
=> Despite being tired, Lan did all her homework carefully.
9. evrybody has a great regard for her despite her poverty
=> Although she is poor, everybody has a great regard for her.
10. they worked very hard although they were old
=> In spite of being old, they worked very hard.
11. peter didn't go to school yesterday because he was sick
=> Because of his sickness, Peter didn't go to school yesterday.
12. mary went to bed early because she felt tired
=> Because of feeling tired, Mary went to bed early.
13.she didn't go to thr circus with betty because she had a bad cold
=> Because of the bad cold, she didn't go to the circus with betty.
14. john succeeded in his exam because he work hard
=> Because of working hard, John succeeded in his exam.
15. she stayed at home because her mother was sick
=> Because of her mother sickness, she stayed at home.
16.i like him because his father is kind to me
=> Because of his father kindness, I like him.
17. i couldn't do the test because it was difficult
=> Because of the difficult test, I couldn;t do it.
18. although he got up early, he was late for the first train
=> In spite of getting up early, he was late for the first train.
19.although i am hugry, i can't eat now
=> Despite being hungry, I can't eat now
20. despite the narrow streets, many people drive cars in this city
=> Though the streets are narrow, many people drives cars in this city.
21. in spite of the high prices, my daughters insist on going to the movie
=> Although the prices are high, my daughters insist on going to movie.
22. they worked very hard inspite of their old age
=> Despite being old, they worked very hard.
1. i couldn't do the test because it was difficult
=> Because of the difficult test, I couldn't do it.
2.although he got up early, he was late for the first train
=> In spite of getting up early, he was late for the first train.
3.although english grammar is difficult, we like to study it
=> In spite of the difficulties in English grammar, we like to study it.
4. although he is an excellent doctor, he can't cure lever cancer
=> Despite being an excellent doctor, he can't cure lever cancer.
5. although my friend doesn't have money , she wans to buy that new car
=> Despite not having money,she wants to buy that new car.
6. although mai didn't speak english well, she decided to live in london
=> In spite of not speaking English well, Mai decided to live in London.
7. although he is sick, he goes to school
=> In spite of being sick, he goes to school.
8. although lan was tired, she did all her homwork carefully
=> Despite being tired, Lan did all her homework carefully.
9. evrybody has a great regard for her despite her poverty
=> Although she is poor, everybody has a great regard for her.
10. they worked very hard although they were old
=> In spite of being old, they worked very hard.
11. peter didn't go to school yesterday because he was sick
=> Because of his sickness, Peter didn't go to school yesterday.
12. mary went to bed early because she felt tired
=> Because of feeling tired, Mary went to bed early.
13.she didn't go to thr circus with betty because she had a bad cold
=> Because of the bad cold, she didn't go to the circus with betty.
14. john succeeded in his exam because he work hard
=> Because of working hard, John succeeded in his exam.
15. she stayed at home because her mother was sick
=> Because of her mother sickness, she stayed at home.
16.i like him because his father is kind to me
=> Because of his father kindness, I like him.
17. i couldn't do the test because it was difficult
=> Because of the difficult test, I couldn;t do it.
18. although he got up early, he was late for the first train
=> In spite of getting up early, he was late for the first train.
19.although i am hugry, i can't eat now
=> Despite being hungry, I can't eat now
20. despite the narrow streets, many people drive cars in this city
=> Though the streets are narrow, many people drives cars in this city.
21. in spite of the high prices, my daughters insist on going to the movie
=> Although the prices are high, my daughters insist on going to movie.
22. they worked very hard inspite of their old age
=> Despite being old, they worked very hard.
I.rearrange the following words to make meaningful sentences
1.the test./when/signed sadly/that/he heard/failed/he/Tuan
->....Tuan signed sadly when he heard he failed the tese..........................
2./use selectricity/I'm/to catch fish./they/beacause/very worried
->....I'm very worries because they use electricity to catch fish.............................
3. to use./If/water/,/have/the water/we/pollute/will/no fresh/we/
->..If .we pollute the water ,we will have no fresh water to use..................................
4. early february./is/ in late january/Tet/which occurs/a festival/or/
->..tet is a festival which occurs in late January or early february..........................
5. forgot/Mrs.Yen/turn off/to/the/when/faucet/left for/she/word.
->....Mrs Yen forgot to turn off the faucet when she left for word..........................
6.temperatures/experience/Hue/25 độ C and 30 độ C./will/between ->...Hue will experience temperatures between 25 do C and 30 do...........................
II.1.Mrs.Mi was tired,but she helped Tuan with his homework
-> Although....Mrs.Mi was tired,she helped Tuan with his homework.....................
2.Because he doesn't study hard,he can't pass the final exam.
->If....he studdied hard,he could pass the final exam.....................
3.she has a bad cold,so she can't go to school today
->If...she didn't have a bad cold,she could go to school today..................
4.He didn't finish his homework,but he went to bed early
->Although...he didn't finish his homework,he went to bed early.............
5.She has a math test tomorrow,but she is till playing computer games now
->Although....she has a math test tomorrow ,she is still playing computer games now.................