I stopped corresponding with Ben a long time ago. → I haven’t
7. It’s almost 3 months since I last played badminton.
→I haven’t
8. Her sister didn’t meet her cousin a few years ago.
→Her sister
9. I didn’t live in Tra Vinh when I was eight years old.
→I haven’t
10. We last talked to our form teacher three months ago.
→We have not
11. My brother stopped smoking four weeks ago.
→My brother hasn’t
12. My teacher hasn’t talked to us since we left school.
→My teacher last
13. My father hasn’t planted trees in the garden for two months.
→ My father stopped
14. I have not visited Uncle Tri since 2005.
→I last
15. She hasn’t written to John since August.
→ She stopped
16. They stopped producing this kind of toy a long time ago.
 They haven’t
17 . We last saw Mary when we left university.
 We haven’t
18. I last travelled by plane a year ago.
→ I haven’t
19. We stopped communicating with each other by radio a long time ago.
 We haven’ t
20. You last helped me when you graduated from college.
 You haven’t