18. _______, and the problem will be straightened out.

　 　　 A. There being a little effort　　　　 B. Having a little effort　

C. If you have a bit more effort　　 　　 D. A bit more effort

17. -- Have you moved into the new house?

　 -- Not yet. The rooms _______.

A. are painting　　　　 B. are being painted

C. are painted　　　　　 D. are being painting

16. The United States _______one of the lowest smoking rates －25.5 percent of the population.

A. is　　　 B. have　　　 C. has　　　 D. are

15. That bicycle doesn't _______to Peter.

　 A. owe　　　 B. afford　　 D .lend　 　　D. belong

14. ---I want to apologize for us all.

　 ---_______ .

A. Don't think more about it　 B. It's very kind of you to say that

　 C. Thank you very much　　　 D. It doesn't matter

13.He______ on the grass, looking at the clouds in the sky.

A. is laying　 　　　　 B. has laid　 　　　　　 C. was lying　 　　　 D. has lied

12. The country life he was used to _______greatly since 1992.

A. change　　　　 B. has changed　　　 C. changing　　　 D. have changed

11. ---She isn't a dancing teacher, is she?

---_______.

A. No, but she was.　　 B. Yes, she isn't　 　　 C. Yes, she wasn't　　 D. No, she is

10. Most birds find it safe to sleep in the trees, but _______they have eggs or young chicks, they don’t use a nest.

　 A. why　　 B. how　　 C. unless　　 D. where

9. _______ boys and girls in that school are almost equal.

A. A number of　　　　 B. The numbers of　　　　 C. Numbers of　　　　　　　 D. The number of