1. I (live) here since 1989.
2. They (work) for this factory for 20 years.
3. He (read) this novel three times.
4. Hoa and I (know) each other since we were at the same class.
5. I (not/see) her since last month.
6. I (not/work) have not worked today.
7. We (buy) a new lamp.
8. We (not/plan) our holiday yet.
9. Where (be/you) ?
10. He (write) five letters.
11. (be/you) at school?
12. School (not/start) yet.
13. (speak/he) to his boss?
14. No,he (have/not) the time yet.
15. The cat (just/catch) a mouse.
16. He (already/invite) his friends.
17. Julia (make) a table with three columns.
18. The teacher (lose) the keys,so he can’t open the door.
19. I (just/clean) my bike.
20. My friends (give up) smoking.
bla bla
Chia động từ phải k bn?