20. There are many people _______ to buy cars in the modern world.

A. want　　　 　　 B. wanted　　 　　　 C. wanting　　 　　 D. to want

19. We should do as much as we can _______ water.

A. for saving　 　　 B. to save　　 　　　　　　　 C. save　　 　　　　　 D. saved

18. A bird was seen _______ into the classroom yesterday.

A. flew　　 　　　　　 B. to fly　　 　　　　　　　 C. fly　　 　　　　　 D. was flying

17. The teacher asked the students to close the windows _______ the wind from _______ the papers away.

A. to stop; blowing 　　　　　　　　　　　　　 B. stopping; blowing　

C. to stop; blow　 　　　　　　　　　　　　　　　　　 D. stopped; blow

16. Is there any time_______ to the museum?

A. going　 　　　　　 B. to go　 　　　　　 C. goes　　　 　　　 D. gone

15. The mother asked the boy _______ down the ladder, but he went on _______ instead.

A. come; climbing 　　　　　　　　　　　　　　　　　 B. to come; to climb　　　

C. to come; climbing　 　　　　　　　　　　　 D. coming; climbing

14. The students are busy _______ ready for the exam now.

A. getting　　 　　　　　　　 B. get　　 　　　　　 C. got　　　 　　　　 D. to get

13. You’d better _______ at home all the time. It’s bad for your health.

A. don’t stay 　　　　 B. no to stay　　　　　 C. not stay 　　　　　 D. not staying

12. A clock is made for _______ us the time.

A. tell　　 　　　　　　 B. telling　 　　　　　 C. to tell　　 　　　　 D. tells

11. The house is not big enough for us all _______.

A. to live in　　 　　 B. to be lived in　 　 C. to live　　 　　　　 D. for living in