35. The reason ____ the crop grows badly here is ____ it is not suitable to grow this crop here.

A. that; because　 B. why; that　 C. why; because　 D. because; why

34. There is some _____ how they can pay off so much debt.

A. question　 B. problem　 C. doubt　 D. wonder

33. The people all over the world should work hard ______ pollution.

A. for　　 B. against　 C. with　 D. on

32. ____ is well-known, China has the largest population in the world.

A. As　 B. It　　 C. Which　 D. That

31. Work hard and you’ll win success _____.

A. at once　　　 B. in a hurry　 C. earlier or later　 D. in time

30. I’ll give this dictionary to ______ wants to have it.

A. whomever　 B. whoever　 C. whom　　 D. whatever

29. They want to know _____ do to help us.

A. what can they　　 B. what they can　　 C. how they can　 D. how can they

28. ---- Can I do the job?

　 ---- I’m afraid not, because it calls _____ skill and patience.

A. up　 B. for　 C. off　 D. in