1. The last time we went to the concert was over a year ago
2. We haven't seen our grandparents for two years
3. This is the most romantic story I have ever read
4. My father hasn't seen my uncle for nearly 20 years
5. We haven't gone to the cinema for 2 years
6. We haven't seen him since Monday
7. John last had his hair cut 6 months ago
 It's over 6 months since John last had his hair cut 
8. We have moved to this area for 10 years
9. My father hasn't smoked since last year
10. When did you teach at that school?
11. She started learning English 4 years ago
12. My father has given up smoking since last year
13. They started working in that factory in 2001
14. Lan didn't write to Maria a month ago
15. I didn't see her a long time ago
16. How long have you listened to classical music? 
17. When did you have this car?
18. I haven't seen Jane for a month
19. I last spoke to him a week ago
20. When did he find his new job?
I haven't seen Christ for a month

1The last time we went to the concert was over a year ago.
2We haven't seen our grandparents for two years.
3This is the most romantic story I have ever read.
4My father hasn't seen my uncle for nearly 20 years.
5We haven't gone to the cinema for 2 years.
6We haven't seen him since Monday.
7John last had his hair cut 6 months ago.
8We have moved to this area for 10 years.
9My father hasn't smoked since last year.
10When did you teach at that school?