19. ---Alice, why didn't you come yesterday?　 ---I____, but I had an unexpected visitor.　

A. had　 　B. would　 　 C. was going to　 　 D. did

18. The fire spread through the hotel very quickly, but everyone __________ get out.

A. had to　 　　　　　 B. would　 　　　　　　 C. could　 　　　　　　 D. was able to

17. Robert is said __________ abroad, but I do not know what country he studied in.

A. to have studied　 B. to study　 C. to be studying　 D. to have been studying

16. ----Will you stay for lunch?　 ---Sorry, ______. My brother is coming to see me.

A.I mustn't　 　　　 B.I can't　 　　　 C.I needn't　 　　　　 D.I won't

15. The price __________, but I doubt whether it will remain so.

A. went down　 B. will go down　 C. has gone down　 D. was going down

14. We decided not to climb the mountain because it was raining __________.

A. badly　 　　　　　　 B. strongly　 　　　　 C. hardly　 　　　　　 D. heavily

13. ---Can I help you, sir?　 ---Yes. I bought this radio here yesterday, but it _____.

A. didn't work　 B. wouldn't work　 C. can't work　 D. doesn't work

12. I can hardly hear the radio. Would you please __________?

A. turn it on　　 B. turn it down　　 C. turn it up　　 　　　 D. turn it off

11. ----Do you remember __________ he came?　 ----Yes, I do, he came by car.

A. how　 　　　　　　 B. when　 　　　　　 C. that　 　　　　　　 D. if　

10. ---Would you like to come to dinner tonight?　 ----I'd like to ____ I'm too busy.

A. and　 　　　　　　 B. so　 　　　　　　　　 C. as　 　　　　　　　　 D. but