17. I will never stop ______________they might like it.

A. no matter how　　　　　 B. how　　　　　 C. what　　　　　 D. though

16. __________often you ring, no one will answer.

A. How　　　　　 B. However　　　　　 C. Whom　　　　　 D. Whenever

15. They waited __________it was dark before leaving, _________they didn’t want anyone to see them leave.

A. since; because　　　　　 B. until; as　　　　 C. unless; for　　　　 D. so; because

14. I knew Mr. Green _____________I knew Mrs. Green.

A. long before　　　　 B. before long　　 　　　　C. long ago　　　　　 D. after long

13. ____________, I am sure that the boy is honest.

A. Whatever people say　　　　　　　 B. No matter people say

C. What people say　　　　　　　　　 D. It doesn’t matter people say

12. __________the rain has stopped, let’s continue to work.

A. For　　　　 B. Now that　　　　　　　 C. That　　　　　 D. Because

11. He always thinks I’m wrong, _____________I may say.

A. no matter whatever　　　　　 B. whatever　　　　　 C. what　　　　　　　 D. that

10. I often visited Tian’an Men Square ____________I was staying in Beijing.

A. until　　　　 B. during　　　　　 C. while　　　　　　　 D. throughout

9. I don’t think you’ll be able to understand this formula(公式) ____________you finish school.

A. as if　　　　　 B. only when　　　　　　　　 C. even　　　　　 D. even when

8. __________I saw the computer, I showed great interest in it.

A. At first　　　 B. For the first time　　　　 C. Until　　　　　　 D. The first time