13. A large number of students _____ to work in Xingjiang.

A. have gone B. has gone C. goes D. is going

12. I think maths _____ very difficult to learn.

A. is B. are C. has D. have

11. Most of the houses _______ this year.

A. has built　　 B. have built

C. has been built D. have been built

10. Everyone except Tom and John _____ there when the meeting began.

A. is B. was C. are D. were

9. Our knowledge of computer _____ growing all the time.

A. be B. is C. are D. were

8. The old man has two children but _____ of them lives with him.

A. both B. none C. neither D. all

7. ------Two months _______ quite a long time.

------Yes. I’m afraid that he will miss a lot of lessons.

A. is B. are C. was D. were

6. My shirt _____ white and my trousers _____ blue.

A. are; are　　　　 B. are; is

C. is; is　　　　　　 D. is; are

5. Are there any _______ on the farm?

　 A. horse　 B. duck　 C. chicken　 D. sheep

4. _______ of them has his own opinion.

　 A. Both　 B. Some　 C. Every　 D. Each