1. When I (come) …came………, he was cooking dinner.

`to` Hành động đang diễn ra thì hành động khác xen vào (hành động xen vào chia QKĐ).

11. My brother sometimes(stay)……stays….…..up late.

`to` sometimes là HTĐ.

2. He (not finish)………hasn't finished…………his homework yet.

`to` yet là HTHT.

12. We usually(be)………are usually…….……happy.

`to` be+ usually.

3. Since he (move)…moved…….there, he (not phone)………haven't phoned.……….me

`to` Since+ QKĐ, HTHT.

13. He (leave)………has left………….Hue lately.

`to` lately là HTHT.

4. I wish he (not damage)………didn't damage…………my car.

`to` dạng hiện tại lùi sang qk.

14. They wish they(visit)……visited…….…… Hue some day.

`to` dạng hiện tại lùi sang qk.

5. People (build)……have built…………a new bridge recently.

`to` recently là HTHT.

15. He (not finish)………didn't finish…….….his work last week.

`to` last week là QKĐ.

6. We(not save)………haven't saved……..…..paper so far.

`to` so far là HTHT.

16. She wishes it (not rain)………wasn't raining…….………... now.

`to` hiện tại tiếp diễn lùi sang qk tiếp diễn.

7. He(ever be). ………has ever been……….…..to France before.

`to` before là HTHT.

17. He (not meet)……hasn't met……………her for a long time.

`to` for a long time là HTHT.

8. Tom (make)……made………….……a lot of calls yesterday.

`to` yesterday là QKĐ.

18. We (live)….………have lived…….… there since last year.

`to` since là HTHT.

9. I wish he(can)………could…….…….play better.

`to` can `to` could.

19. Last night she (watch)……watched……..……………TV late.

`to` Last night là QKĐ.

10. I always(drink)……drink……….…….fruit juice.

`to` always là HTĐ.

20. Be careful! The teacher (look)………is looking…….…….at you.

`to` Be careful! là HTTD.