1.---- Won't you have another try?　　

---- ____.

A. Yes, I will　　　　　　 B. Yes, I won't　 　

C. Yes, I will have　　　　 D. Yes, I won't have

13. D　 14. B　 15. A　 16. C　 17. C 　18. A　 19. B　 20. C

英语20分钟专题突破：省略和插入语

1. A 2. D 3. A　 4. B　 5. A　 6. B　 7. D　 8. D　 9. C　 10. A　 11. D　 12. B

20.The teacher told the students that they ________ keep silent in class all the time.

A. ought to not　　　B. ought not to　　 C. ought not to have　　 D. can't

参考答案：

19. ________ you succeed !

A. Can　　 　　　　　 B. May　 　　　　 C. Must　　 　　 D. Will

18. She is studying medical science now but she _________ a lawyer.

A. used to be　　　　 B. would be　　　 C. were　　　　 D. had been

17. You are their teacher. You _________ care of them.

A. should to take　　　B. might to take　 C. ought to take　　 D. need to take

16. He had known the matter before you told him, so you _________ have told it to him.

　A. mustn't　　　 B. can't　　 　　　 C. needn't　　 　D. shouldn't

15.　 --- That must be a mistake.　　---- No .it _________ be.

　A. can't　　 　 B. isn't able to　 　 C. can　　 　 D. was able to

14. Since the ground is white, it _________ last night.

A. had snowed　　　　　　　　 B. must have snowed　

C. must be snowing　　　　　 D. must have been snowing