Chia động từ trong ngoặc ở thì quá khứ đơn hoặc quá khứ tiếp diễn.

1. While they __________ (wait) for the train, it __________ (start) to rain.
2. I __________ (read) a book when my friend __________ (call) me.
3. When I __________ (open) the door, the cat __________ (run) outside.
4. He __________ (hurt) his leg while he __________ (play) football.
5. We __________ (eat) dinner when the lights __________ (go) out.
6. While she __________ (talk) on the phone, her baby __________ (cry).
7. They __________ (watch) TV when the power __________ (go) off.
8. When she __________ (come) home, her husband __________ (cook) dinner.
9. I __________ (clean) the kitchen when the doorbell __________ (ring).
10. He __________ (fall) off the bike while he __________ (ride) it.

Làm giúp tui với,làm được câu nào cũng được á