15. Hardly when the bus suddenly pulled away.

　　A. they had got to the bus stop √B. had they got to the bus stop

　　C. did they get to the bus stop D. they got to the bus stop

　　16. Mother doesn’t know how much time I have spent in watching TV; if she

　　ever found out, I’m sure .

　　√A. she’d never forgive me B. she never forgive me

　　C. she’ll never forgive me D. she does never forgive me

　　17. The teacher told the students that the Earth round the Sun.

　　√A. moves B. moved C. has moved D. has been moving

　　18. While the secretary his desk, he found the long lost report.

　　A. had been cleaning B. is cleaning

　　C. has been cleaning √D. was cleaning

　　19. As soon as he his error, Rockfeller made the necessary corrections

　　to his data collected.

　　A. discovered B. has discovered

　　C. has promoted √D. was cleaning

　　20. Fred believed that his friend by his employer a month or so ago.

　　√A. discovered B. has discovered C. has promoted D. was cleaning

　　21. I think I’ll wait until the mail .

　　A. should come B. is coming √C. comes D. will come

　　22. We could have bought a new are last year, but we really it.

　　A. can’t afford √B. couldn’t afford

　　C. won’t afford D. unable to afford

　　23. If you don’t pay your taxes ,they .

　　A. have you arrested (逮捕) √B. will have you arrested

　　C. must have you arrested D. have you arrest

　　24. I meeting you ever since we parted.

　　A. was looking forward to √B. have been looking forward to

　　C. had been looking forward to D. looked forward to

　　25. They told me that by the end of the month they in this flat for12 years.

　　A. has lived B. will have lived

　　C. has been living √D. would have been living