I.

$\text{1.}$ He has not gone abroad before.

$\text{2.}$ She has driven for 1 month.

$\text{3.}$ We have been eating since it started to rain.

$\text{4.}$ I haven't had my hair cut since I left her.

$\text{5.}$

$\text{→}$She hasn't kissed me for 5 months.

$\text{→}$ It is 5 months since she last kissed me.

$\text{→}$ She last kissed me 5 months ago.

$\text{6.}$ 

$\text{→}$ We haven't met him for a long time.

$\text{→}$ We last met him a long time ago.

$\text{→}$ The last time we met him was a long time ago.

$\text{7.}$ How long have you had it?

$\text{8.}$ I haven't had such a delicious meal before.

$\text{9.}$

$\text{→}$ It has been 8 days since I last saw him.

$\text{→}$ I last saw him 8 days ago.

$\text{→}$ The last time I saw him was 8 days ago.

$\text{10.}$ I haven't gone to see him for more than 10 years.

$\text{11.}$

$\text{→}$ It has been 2 years since I last ate this kind of food.

$\text{→}$ I last ate this kind of food for 2 years.

$\text{→}$ The last time I ate this kind of food was 2 years ago.

$\text{12.}$ It's the first time I have ever met such a famous singer.

$\text{13.}$ How long have you been doing research on lung cancer?

$\text{14.}$ When did you study English?

$\text{15.}$ Women began fighting for their rights when the middle of the 20th century.

$\text{16.}$ Jack and Bill started learning to drive 2 weeks ago.

$\text{17.}$ When did you go out with him?

$\text{18.}$ như câu 16.

$\text{19.}$ She has been working as a secretary for 2 years.

$\text{20.}$ I have never seen such an interesting film.

1. This is the first time he has gone abroad.
 He has  _ not gone abroad before.
2. She started driving 1 month ago.
 She has  driven for 1 month.
3. We began eating when it started to rain.
 We have been eating since it started to rain.
4. I last had my hair cut when I left her.
 I haven't had my hair cut since I left her.
5. The last time she kissed me was 5 months ago.
 She hasn’t ___kissed me for 5 months.
 It is__5 months since she last kissed me.
 She last_____kissed me 5 months ago.
6. It is a long time since we last met him.
We haven't met him for a long time.
We last met him a long time ago.
The last time we met him was a long time ago.
7.  When did you have it ?
 How long___have you had it?________________________________________________________
8. This is the first time I have had such a delicious meal .
 I haven’t___ had such a delicious meal before.________________________________________________________
9. I haven't seen him for 8 days.

It has been 8 days since I last saw him.

 I last saw him 8 days ago.

The last time I saw him was 8 days ago.

10. It’s more than ten years since I last went to see him.
 I haven’t ___gone to see him for more than 10 years.
11. I haven’t eaten this kind of food for 2 years
It has been 2 years since I last ate this kind of food.

I last ate this kind of food for 2 years.

The last time I ate this kind of food was 2 years ago.

12. I’ve never met such a famous singer before.
 It’s the first time __I have ever met such a famous singer.
13. When did you begin to do research on lung cancer?
 How long __have you been doing research on lung cancer?
14. How long have you studied English?
 When__did you study English?___________________________________________________________
15. Women have been fighting for their rights since the middle of the 20th century.
 Women began _fighting for their rights when the middle of the 20th century.
16. Jack and Bill have learned to drive for 2 weeks.
 Jack and Bill started __ learning to drive 2 weeks ago._______________________________________________
17. How long is it since you went out with him.
 When __did you go out with him?___________________________________________________________
18. Jack and Bill have learned to drive for 2 weeks.
 Jack and Bill started ______learning to drive 2 weeks ago.
19. She started working as a secretary 2 years ago.
She has been working as a secretary for 2 years
20. This the most intersting film I have ever seen 
Never __seen such an interesting film._________________________