K
Khách

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

13 tháng 12 2021

II. Complete the following sentences using: for, since, ago

1.      _____since_____ Christmas, the weather has been quite good.

2.      He's been collecting stamps ___for____ the past twenty years.

3.      Hoa and Quan quarrelled with each other some time ______ago____.

4.      How long _____ago_____ did this happen?

5.      How long is it _____since_____ you last saw Linda?

6.      I came here a year _____ago_____.

7.      I don’t know where he is, but he was here a minute ______ago____.

 

8.      I got here an hour ____ago___. – What! You mean you’ve been waiting _for_____ an hour?

 

13 tháng 12 2021

1. since

2. since

3. ago

4. since

5. since

6. ago

7. ago

8. ago............ for

Viết lại câu không thau đổi nghĩa 1. He began to give up smoking last year. -> he has... 2. They began to Hue in Ho Chỉ Minh City in 2000. ->they have... 3.He started to leam how to plạy the piano in 2005, ->He has... 4. When did you start learning English? ->How long... 5. How long bave you learnt English? , ->When... 6. When dịd you first know Mrayam? ->How long is ... 7. When did people first use the telephone? ->How long is ... 8. When did you start saving money? ->How...
Đọc tiếp

Viết lại câu không thau đổi nghĩa
1. He began to give up smoking last year.
-> he has...
2. They began to Hue in Ho Chỉ Minh City in 2000.
->they have...
3.He started to leam how to plạy the piano in 2005,
->He has...
4. When did you start learning English?
->How long...
5. How long bave you learnt English? ,
->When...
6. When dịd you first know Mrayam?
->How long is ...
7. When did people first use the telephone?
->How long is ...
8. When did you start saving money?
->How long...
9. The last time I wrote to hẹr was two years ago.
->I haven"t...
10. I hasn't rained for two months.
->The last time
11.I last talked to her in 2004.
->l haven't...
12.It has been a long time since Lan left her school.
-> Lan has...
13. He hasn"t Written to me for two months,
->it has been
14, She last heard that song three years ago.
->It's three
15.. It's two yesrs since I saw hẹr.
-> I haven't
16. It's ten years since Nam stopped playing the piano.
->Mary hasn't
17. Mary was last seen 20 minutes ago.
->Mary hasn't
18.The last time I saw David was in 1995
->I haven't
19.We haven't been to a concert for over a year.
->The last time
20.Your birthday party was the last time I really enjoyed myself
->I haven't
3.It's nearly 20 years since my father saw his brother.
->My father hasn't
4.Tom went to Scotland last Friday and is still there.
->Tom has
5.When did you last ride a bike?
->How long is it
6.The last time I went swimming was when I was in France
->I haven't
7.You haven't tidied up this room for weeks.
->It's
8.He was last in touch with me there weeks ago.
-> He hasn;t
9.Mr John hasn't visited France since 1990

1
12 tháng 9 2019

Viết lại câu không thau đổi nghĩa
1. He began to give up smoking last year.
-> he has given up smoking since last year
2. They began to Hue in Ho Chỉ Minh City in 2000.
->they have been to Hue in Ho Chỉ Minh City since 2000
3.He started to leam how to plạy the piano in 2005,
->He has learnt how to plạy the piano since 2005
4. When did you start learning English?
->How long have you learnt E ?
5. How long bave you learnt English? ,
->When did you start learning English
6. When dịd you first know Mrayam?
->How long is it since you first knew Mrayam?
7. When did people first use the telephone?
->How long is it since people first used the telephone?
8. When did you start saving money?
->How long have you saved money ?
9. The last time I wrote to hẹr was two years ago.
->I haven"t written to her for two years
10. I hasn't rained for two months.
->The last time it rained was two months ago
11.I last talked to her in 2004.
->l haven't talked to her since 2004
12.It has been a long time since Lan left her school.
-> Lan has left her school for a long time
13. He hasn"t Written to me for two months,
->it has been two months since he wrote to me
14, She last heard that song three years ago.
->It's three years since I last heard that song
15.. It's two yesrs since I saw hẹr.
-> I haven't seen her for two years
16. It's ten years since Nam stopped playing the piano.
->Mary hasn't played the piano for ten years
17. Mary was last seen 20 minutes ago.
->Mary hasn't seen for 20 minutes
18.The last time I saw David was in 1995
->I haven't seen David since 1995
19.We haven't been to a concert for over a year.
->The last time we were to a concert was over a year ago
20.Your birthday party was the last time I really enjoyed myself
->I haven't enjoyed myself since your birthday party
3.It's nearly 20 years since my father saw his brother.
->My father hasn't seen his brother for nearly 20 years
4.Tom went to Scotland last Friday and is still there.
->Tom has gone to Scotland since Friday and is still there.
5.When did you last ride a bike?
->How long is it since you last rode a bike?
6.The last time I went swimming was when I was in France
->I haven't gone swimming since I was in France
7.You haven't tidied up this room for weeks.
->It's weeks since you tidied up this room
8.He was last in touch with me there weeks ago.
-> He hasn't touched with me for three weeks
9.Mr John hasn't visited France since 1990

The last time Mr John visited France was in 1990

#Yumi

23 tháng 9 2018

complete with "for", "since" or " ago".

10.I've know him ....for. ages.

14. He'd been here ...for... over an hour when we arrived.

15. I've been trying to fix this computer ....since.... early this morning.

76. I haven't been to a party ......for... ages.

89. I have been working here .for.. a fortnight.

113. ..Since.. June 1 she has been working here.

124. We've been wating for the train ...since.. noon.

138. We haven't been to the cinema .......for...ages.

7'. Liz has studied medicine .for.. a long time.

1. Rewrite the following sentences beginnig as shown, so that the meaning remains the same. a. The factory is producing more and more pollution. --> More anh more............................................. b. He drives carelessly , so he usually has accidents. --> He is such................... c. He has been collecting stamps for three years. --> He started.................... d. I don't really want to go to the museum. --> I'd rather...................... e. Vicky is too young to join the...
Đọc tiếp

1. Rewrite the following sentences beginnig as shown, so that the meaning remains the same.
a. The factory is producing more and more pollution.
--> More anh more.............................................
b. He drives carelessly , so he usually has accidents.
--> He is such...................
c. He has been collecting stamps for three years.
--> He started....................
d. I don't really want to go to the museum.
--> I'd rather......................
e. Vicky is too young to join the club.
--> Vicky is not..................
f. I wrote thí essay in three hours.
--> It took..........................
g. How long is it since you last saw Ann?
--> When.....................
h. You will catch a cold if you don't keep your feet dry.
--> Unlesss..................
i. The police let him leave last they had questioned him.
--> He was..............
k. I haven't seen that man here before.
--> It's.....................
l. The furniture was so expensive that i didn't buy it.
--> The furniture was too........................
m. I'm always nervous when i travel by air.
--> Travelling...........................
2. Complete the second sentences so that it has a similar meaning to the first one, using the word given in brackets.Do not chang the words in anyway.

a. he didn't wake up early, but now she does (used)
-->She.................. early.
b. They haven't talked to each other for 2 years. (since)
--> It's............................ to each other.
c. She has never heard such a ridiculous lie (most)
--> It's the.................... ever heard.

d. He hasn't been to school for four days. (absent)
--> He................................ school for 4 days.

4
18 tháng 1 2020

1. Rewrite the following sentences beginnig as shown, so that the meaning remains the same.
a. The factory is producing more and more pollution.
--> More anh more pollution is being produced by the factory
b. He drives carelessly , so he usually has accidents.
--> He is such.......a careless driver that he usually has accidents
c. He has been collecting stamps for three years.
--> He started..........collecting stamps three years ago
d. I don't really want to go to the museum.
--> I'd rather.......not go to the museum
e. Vicky is too young to join the club.
--> Vicky is not.........old enough to join the club
f. I wrote thí essay in three hours.
--> It took.............me three hours to write this essay
g. How long is it since you last saw Ann?
--> When.........did you last see Ann ?

h. You will catch a cold if you don't keep your feet dry.
--> Unlesss.........you keep your feet dry, you will catch a cold
i. The police let him leave last they had questioned him.
--> He was......released after being questioned by the police
k. I haven't seen that man here before.
--> It's........the first time I have seen that man here
l. The furniture was so expensive that i didn't buy it.
--> The furniture was too...........expensive for me to buy
m. I'm always nervous when i travel by air.
--> Travelling.............by air always makes me nervous
2. Complete the second sentences so that it has a similar meaning to the first one, using the word given in brackets.Do not chang the words in anyway.

a. he didn't wake up early, but now she does (used)
-->She..........used to wake up........ early.
b. They haven't talked to each other for 2 years. (since)
--> It's...2 years since they talked...... to each other.
c. She has never heard such a ridiculous lie (most)
--> It's the..most ridiculous lie she has.. ever heard.

d. He hasn't been to school for four days. (absent)
--> He....has been absent from... school for 4 days.

18 tháng 1 2020

1. Rewrite the following sentences beginnig as shown, so that the meaning remains the same.
a. The factory is producing more and more pollution.
--> More anh more.....................pollution is being produced by the factory........................
b. He drives carelessly , so he usually has accidents.
--> He is such.......a careless driver that he usually has accidents............
c. He has been collecting stamps for three years.
--> He started..........collecting stamps three years ago..........
d. I don't really want to go to the museum.
--> I'd rather...........not go to the museum...........
e. Vicky is too young to join the club.
--> Vicky is not.........old enough to join the club.........
f. I wrote thí essay in three hours.
--> It took.............me three hours to write this essay.............
g. How long is it since you last saw Ann?
--> When.........did you last see Ann?............
h. You will catch a cold if you don't keep your feet dry.
--> Unlesss.........you keep your feet dry, you will catch a cold.........
i. The police let him leave last they had questioned him.
--> He was......released after being questioned by the police........
k. I haven't seen that man here before.
--> It's........the first time I have ever seen that man here.............
l. The furniture was so expensive that i didn't buy it.
--> The furniture was too...........expensive for me to buy.............
m. I'm always nervous when i travel by air.
--> Travelling.............by air always makes me nervous..............
2. Complete the second sentences so that it has a similar meaning to the first one, using the word given in brackets.Do not chang the words in anyway.

a. he didn't wake up early, but now she does (used)
-->She..........used to wake up........ early.
b. They haven't talked to each other for 2 years. (since)
--> It's................2 years since they last talked............ to each other.
c. She has never heard such a ridiculous lie (most)
--> It's the...........most ridiculous lie she has......... ever heard.

d. He hasn't been to school for four days. (absent)
--> He..................has been absent from.............. school for 4 days.

PAST SIMPLE TENSE + PRESENT PERFECT TENSE (3) Exercise 1: Choose the best answer to complete the following sentences 1. There _________ a serious food in this area last year. A. was B. has been C. were D. have been 2. She _________ me good health and success on my last birthday. A. wished B. wishes C. has wished D. wishing 3. The last time they __________Ha Noi was in 2008. A. visit B. visited C. visiting D. have visited 4. She __________her project yet. A. hasn’t finished B. has...
Đọc tiếp
PAST SIMPLE TENSE + PRESENT PERFECT TENSE (3) Exercise 1: Choose the best answer to complete the following sentences 1. There _________ a serious food in this area last year. A. was B. has been C. were D. have been 2. She _________ me good health and success on my last birthday. A. wished B. wishes C. has wished D. wishing 3. The last time they __________Ha Noi was in 2008. A. visit B. visited C. visiting D. have visited 4. She __________her project yet. A. hasn’t finished B. has finished C. finished D. didn’t finish 5. I __________English since I was a child. A. have learn B. has learnt C. learnt D. have learnt 6. Last week, I ___________Ha Long Bay with my family. A. visited B. visit C. am visiting D. have visited 7. She ___________five novels so far. A. have written B wrote C. writes D. has written 8. They first __________each other in 2009. A. meet B. met C. will meet D. have met 9. We have been good friends since we________at School. A. are B. were C. have been D. was 10. There ________an outbreak of coronavirus in the world lately. A. were B. was C. has been D. have been Exercise 2: Rewrite the following sentences using past simple and present perfect tenses. 11. I began watching TV three hours ago. A. I have watched TV for three hours. B. I have watched TV for three hours ago. C. I have watched TV since three hours. 12. The last time she ate fast food was in January. A. She has eaten fast food since January. B. She hasn’t eaten fast food since January. C. She hasn’t eaten fast food for January. 13. He has played soccer since three o’clock. A. He started to play soccer at three o’clock. 2 / 2 B. He started to play soccer three o’clock ago. C. He started to play soccer three o’clock before. 14. I haven’t met her for a long time. A. It’s a long time since I have met her. B. It’s a long time since I haven’t met her. C. It’s a long time since I last met her. 15. Tuan started to do his homework ten minutes ago. A. Tuan has done his homework since ten minutes. B. Tuan has done his homework for ten minutes. C. Tuan have done his homework for ten minutes. 16. When did you study English? A. How long have you studied English? B. How long did you study English? C. How long has you studied English? 17. They began building this house 2 months ago. A. They haven’t built this house for 2 months. B. They have built this house for 2 months ago. C. They have built this house for 2 months. 18. My father started to work in this factory last week. A. My father has worked in this factory in last week. B. My father has worked in this factory for last week. C. My father has worked in this factory since last week. 19. How long has he worked in the garden? A. When has he worked in the garden? B. When did he start to work in the garden? C. When did he started to work in the garden? 20. How long ago did you learn music? A. How long have you learnt music? B. How long have you started to learn music? C. How long did you learn music?
1
14 tháng 4 2020

PAST SIMPLE TENSE + PRESENT PERFECT TENSE (3) Exercise 1: Choose the best answer to complete the following sentences

1. There _________ a serious food in this area last year.

A. was B. has been C. were D. have been

2. She _________ me good health and success on my last birthday.

A. wished B. wishes C. has wished D. wishing

3. The last time they __________Ha Noi was in 2008.

A. visit B. visited C. visiting D. have visited

4. She __________her project yet.

A. hasn’t finished B. has finished C. finished D. didn’t finish

5. I __________English since I was a child.

A. have learn B. has learnt C. learnt D. have learnt

6. Last week, I ___________Ha Long Bay with my family.

A. visited B. visit C. am visiting D. have visited

7. She ___________five novels so far.

A. have written B wrote C. writes D. has written

8. They first __________each other in 2009.

A. meet B. met C. will meet D. have met

9. We have been good friends since we________at School.

A. are B. were C. have been D. was

10. There ________an outbreak of coronavirus in the world lately.

A. were B. was C. has been D. have been

Exercise 2: Rewrite the following sentences using past simple and present perfect tenses.

11. I began watching TV three hours ago.

A. I have watched TV for three hours.

B. I have watched TV for three hours ago.

C. I have watched TV since three hours.

12. The last time she ate fast food was in January.

A. She has eaten fast food since January.

B. She hasn’t eaten fast food since January.

C. She hasn’t eaten fast food for January.

13. He has played soccer since three o’clock.

A. He started to play soccer at three o’clock.

B. He started to play soccer three o’clock ago.

C. He started to play soccer three o’clock before.

14. I haven’t met her for a long time.

A. It’s a long time since I have met her.

B. It’s a long time since I haven’t met her.

C. It’s a long time since I last met her.

15. Tuan started to do his homework ten minutes ago.

A. Tuan has done his homework since ten minutes.

B. Tuan has done his homework for ten minutes.

C. Tuan have done his homework for ten minutes.

16. When did you study English?

A. How long have you studied English?

B. How long did you study English?

C. How long has you studied English?

17. They began building this house 2 months ago.

A. They haven’t built this house for 2 months.

B. They have built this house for 2 months ago.

C. They have built this house for 2 months.

18. My father started to work in this factory last week.

A. My father has worked in this factory in last week.

B. My father has worked in this factory for last week.

C. My father has worked in this factory since last week.

19. How long has he worked in the garden?

A. When has he worked in the garden?

B. When did he start to work in the garden?

C. When did he started to work in the garden?

20. How long ago did you learn music?

A. How long have you learnt music?

B. How long have you started to learn music?

C. How long did you learn music?

Rewrite each of the following sentences beginning with the words given : 1. How long is it since you bought this car ? => When ................................ ? 2. It's two years since I saw her. => I haven't ................ 3. It's easy to learn English. => To learn ............... 4. Lan likes listening to pop music. => Lan is interested ............... 5. People have used the Internet all over the word. => The Internet has ..................... 6. "I'm having a wonderful time here" said...
Đọc tiếp

Rewrite each of the following sentences beginning with the words given :
1. How long is it since you bought this car ?
=> When ................................ ?
2. It's two years since I saw her.
=> I haven't ................
3. It's easy to learn English.
=> To learn ...............
4. Lan likes listening to pop music.
=> Lan is interested ...............
5. People have used the Internet all over the word.
=> The Internet has .....................
6. "I'm having a wonderful time here" said Nga.
=> Nga said .....................
7. My mother must / has to go to work on Sunday. I don't like this.
=> I wish ....................
8. Linda's career as a television presenter began 4 years ago.
=> Linda has been ............
9. It is ages since I last saw you.
=> I haven't .............
10. We last saw him when we were students.
=>We haven't ............
11. She is the most beutiful girl I've ever met.
=> I've never .................

1
17 tháng 8 2019

Rewrite each of the following sentences beginning with the words given :
1. How long is it since you bought this car ?
=> When .....DID YOU BUY THIS CAR........................... ?
2. It's two years since I saw her.
=> I haven't ......SEEN HER FOR TWO YEARS..........
3. It's easy to learn English.
=> To learn ....E IS EASY...........
4. Lan likes listening to pop music.
=> Lan is interested ....IN LISTENING TO POP MUSIC...........
5. People have used the Internet all over the word.
=> The Internet has ....BEEN USED ALL OVER THE WORLD.................
6. "I'm having a wonderful time here" said Nga.
=> Nga said .....THAT SHE WAS HAVING A WONDERFUL TIME THERE................
7. My mother must / has to go to work on Sunday. I don't like this.
=> I wish .....MY MOTHER DIDN'T HAVE TO GO TO WORK ON SUNDAY...............
8. Linda's career as a television presenter began 4 years ago.
=> Linda has been .....A TELEVISION PRESENTER FOR 4 YEARS.......
9. It is ages since I last saw you.
=> I haven't ....SEEN YOU FOR AGES.........
10. We last saw him when we were students.
=>We haven't .....SEEN HIM SINCE WE WERE STUDENTS.......
11. She is the most beutiful girl I've ever met.
=> I've never ...MET SUCH A BEAUTIFUL GIRL BEFORE..............

13 tháng 12 2021

1. since

2. since

3. for

4. for

5. since

6. since

7. since

8. since

13 tháng 12 2021

II. Complete the following sentences using: for, since, ago

1.      I have not seen him ___since____ he was 16.

2.      I haven't seen her _____since_____ her illness.

3.      I’ve been waiting _____for_____ 20 minutes.

4.      It has been foggy ____for___ some days.

5.      It has been raining ____simce___ lunchtime.

6.      It hasn’t rained _______for___ the end of July.

7.      It’s over twenty years ____since______ we last met.

8.      It's been raining ____for___ four o'clock.

30 tháng 8 2017

Bài 1: Choose the correct word to complete the sentences

1. I haven't you spoken to her.......(for/since/ago) she went to London

2. He left school three years.......(for/since/ago), then he worked in France......(for/since/ago) a few months before coming back to England

3. She has got a headache.........(for/since/ago) she got up this morning

4. I have been here....(for/since/ago) an hour. Where have you been?

30 tháng 8 2017

Bài 1: Choose the correct word to complete the sentences

1. I haven't you spoken to her.......(for/since/ago) she went to London

2. He left school three years.......(for/since/ago), then he worked in France......(for/since/ago) a few months before coming back to England

3. She has got a headache.........(for/since/ago) she got up this morning

4. I have been here....(for/since/ago) an hour. Where have you been?

ĐỀ CƯƠNG ÔN TẬP LỤT ANH 9 5. When did Helen and John get married ? - How long ...... 6. My family moved to Ho Chi Minh City two months ago. - It is two months ...... 7. When you phoned me, it was my lunch time. - When you phone me, I …… 8. I started working for the company three years ago. - I’ve …… 9. David went home before we arrived. - When we …… 10. During my dinner, the phone rang. - While …… 11. I started this job five years ago. - I have …… 12. I haven’t been...
Đọc tiếp

ĐỀ CƯƠNG ÔN TẬP LỤT ANH 9

5. When did Helen and John get married ?

- How long ......

6. My family moved to Ho Chi Minh City two months ago.

- It is two months ......

7. When you phoned me, it was my lunch time.

- When you phone me, I ……

8. I started working for the company three years ago.

- I’ve ……

9. David went home before we arrived.

- When we ……

10. During my dinner, the phone rang.

- While ……

11. I started this job five years ago.

- I have ……

12. I haven’t been to the cinema for two years.

- The last time ……

13. How long have Helen and Robert been married ?

- When did Helen get ……

14. I’ve never had problems with this computer before. (time)

- This is the ……

15. It will be my fourth visit to Thailand. (been)

- I have ……

16. They last drank coffee three days ago. (any coffee)

- They ….

17. I last saw Aunt Jenny when I was fifteen. (seen)

- I ……

18. On my arrival at the party, everyone was chatting and eating. (got)

- When ……

Exercise 3 – Choose the option that best completes each of the following sentences.

1. When I last saw him, he ...... in London.

A. has lived B. is living C. was living D. has been living

2. We ....... Dorothy since last Saturday.

A. don’t see B. haven’t seen C. didn’t see D. hadn’t seen

3. He has been selling motorbike ......

A. ten years ago B. since ten years C. for ten years ago D. for ten years now

4. He fell down when he ...... towards the church.

A. run B. runs C. was running D. had run

5. I ...... in the room right now.

A. is being B. was being C. have been being D. am

6. I ...... to New York three times this year.

A. have been B. was C. were D. had been

7. The little girl asked what ...... to her friend.

A. has happened B. happened C. had happened D. is happening

8. I have been waiting for you ......

A. since early morning B. this morning

C. since two hours D. for early morning

9. ...... I was walking around the supermarket, I saw a friend of mine.

A. As soon as B. As C. Until D. Since

10. The first time I noticed something wrong was ...... I got home.

0
1. He began to give up smoking last year. -> He has... 2. They begn to live in Ho Chi Minh City in 2000. -> They have... 3. He started to learn how to play the piano in 2005. -> He has... 4. When did you start learning English? -> How long... 5. How long have you learnt English? -> When... 6. When did you first know Maryam? -> How long is 7. When did people first use the telephone? -> How long is... 8. When did you start saving money? -> How long... 9. The last time i wrote to...
Đọc tiếp

1. He began to give up smoking last year.

-> He has...

2. They begn to live in Ho Chi Minh City in 2000.

-> They have...

3. He started to learn how to play the piano in 2005.

-> He has...

4. When did you start learning English?

-> How long...

5. How long have you learnt English?

-> When...

6. When did you first know Maryam?

-> How long is

7. When did people first use the telephone?

-> How long is...

8. When did you start saving money?

-> How long...

9. The last time i wrote to her was 2 years ago.

-> I haven’t...

10. It hasn’t rained for 2 months.

-> The last time...

11. I last talked to her in 2004.

-> I haven’t...

12. It has been a long time since Lan lelf her school.

-> Lan...

13. He hasn’t written to me for 2 months.

-> it has been...

14. She last heard that song three years ago.

-> It’s three...

15. It’s 2 years since I saw her.

-> I haven’t...

16. It’s ten years since Nam stopped playing the piano.

-> Nam hasn’t...

17. Mary was last seen 20 minutes ago.

-> Mary hasn’t...

18. The last time I saw David was in 1995.

-> I haven’t...

HELP MEEE!!!

1
14 tháng 8 2020

1. He began to give up smoking last year.

-> He has..not smoked since last year.

2. They began to live in Ho Chi Minh City in 2000.

-> They have.lived in HCM City snce 2000..

3. He started to learn how to play the piano in 2005.

-> He has..learnt how to play the piano since 2005.

4. When did you start learning English?

-> How long..have you learnt English?.

5. How long have you learnt English?

-> When.did you start learning English?..

6. When did you first know Maryam?

-> How long is it since you first knew Maryam?

7. When did people first use the telephone?

-> How long is..it since people first used telephone?.

8. When did you start saving money?

-> How long..have you saved money?.

9. The last time i wrote to her was 2 years ago.

-> I haven’t..written to her for 2 years.

10. It hasn’t rained for 2 months.

-> The last time.it rained was 2 months ago..

11. I last talked to her in 2004.

-> I haven’t..talked to her since 2004.

12. It has been a long time since Lan lelf her school.

-> Lan..has left her school for a long time.

13. He hasn’t written to me for 2 months.

-> it has been.2 months since he last wrote to me..

14. She last heard that song three years ago.

-> It’s three.years since she last heard that song..

15. It’s 2 years since I saw her.

-> I haven’t..seen her for 2 years.

16. It’s ten years since Nam stopped playing the piano.

-> Nam hasn’t..played piano for 10 years.

17. Mary was last seen 20 minutes ago.

-> Mary hasn’t..been seen for 20 minutes.

18. The last time I saw David was in 1995.

-> I haven’t.seen David since 1995..