Chi động từ trong ngoặc ở thì quá khứ đơn hoặc thì quá khứ tiếp diễn:
1. We (have) a quarel, so she (avoid) meeting me this morning
2. We finally (open) the door. We (lose) the key
3. Tam and Nam (glance) at her and (sit) down
4. They (write) a letter when I (knock) the door
5. Because it (rain) hard yesterday evening, we (cancel) the game
6. She (look) for her watch when you (call) her
7. What they (do) at 3:00 yesterday evening?
8. We (damage) the building, so they (make) us pay for the damage
9. Tom (drive) to HCM city when he (see) the boy
10. They (call) an ambulance as soon as they (see) the accident
11. He (repair) the roof when his daughter (bring) him a glass of water
12. They (turn) off the light while he (play) the guitar
13. They (annoy) him by asking him some silly questions
14. They (say) nothing when the president (appear)
15. We (get) bored because of a boring speech
16. The president (make) a speech when someone (say) "Hello"
17. He (win) two thousand pounds, but he (not give) up his homewwork