1. What _______ your brother _________ (do) at that time? He ___________ (play) the piano.
2. Why ________ they __________ (not go) to see the play yesterday? Because they _________(see) it before.
3. Two thieves _____ (break) into his house last night and _______ (take) away some money.
4. ________ you _________ (visit) the Summer Palace? Yes, we ________. When ________ you_________ (visit) it? Last term.
5. If it ________ (not rain) next Sunday, we’ll have a football match on the playground.
6. While my father ______ (read) newspapers, my sister and I ______ (prepare) our lessons.
7. The child suddenly ________ (fall) to the ground when he _________ (cross) the street.
8. As soon as he __________ (come), I’ll give the note to him.
9. Don’t make any noise! Grandma ____________ (tell) us an interesting story.
10. My parents __________ (not be) in. They __________ (go) shopping. They ___________(be) back in an hour.
11. Nothing can make us _________ (turn) against our country.
12. If you don’t hurry, you _________ (be) late for the meeting.
13. I _________ (not have) my breakfast today. I _________ (be) so hungry now.
14. How many English words ________ he ________ (learn) before he went to college?
15. Tom ________(be) always the first one __________ (get) up his family.
16. I don’t know when the meeting ________ (begin). But I’m sure it _________ (begin) as soon as the headmaster _________ (come).
17. What _______ they ________ (do) from eight o’clock to nine o’clock last night? They_________ (make) a model plane.
18. I received his letter yesterday. I _________ (not hear) from him since he went to America.
19. He ________ (see) the play last night. But his brother _________ (not see) it, because he ___________ (see) it before.
20. Mike _________ (live) for five years in that city since he began to work there.
答案：
1. was; doing; was playing
2. didn’t; go; have seen
3. broke; took
4. Have; visited; have; did; visit;
5. doesn’t rain
6. was reading; were preparing
7. fell; was crossing
8. comes;
9. is telling
10. aren’t; have gone; will be
11. turn
12. will be
13. didn’t have; am
14. had; learnt
15. is; to get
16. begins; will begin; comes
17. were; doing; were making
18. haven’t heard
19. saw; didn’t see; has seen
20. has been living