33. To deal with the global financial crisis, China ______ the international community to help developing countries.

A. called on　　 　　　 B. called up 　　　　　　　　 C. called in　　　　　 D. called for

32. A study shows people who have a pet visit the doctor less often and experience less sleeping difficulties than ______ without a four-legged friend.

A. these　　　 　　　　　 B. who　　　　　 　　　 C. those　　　　　 　　 D. that

31. Many parents feel that their child's IQ is ______ determines how well they are going to do in their future life.

A. what　　　　 　　 B. that　　　　　 　　　 C. which　　　　　 　　 D. where

30. Facing the economic depression, every possible means ______ this year to save the company from going bankrupt.

A. has been tried 　　　 B. has tried　　　　 　 C. have been tried　　 D. have tried

29. -- Haven’t I told you to prepare your lessons well before the exam? You failed again.

-- But I ______ for the exam longer than I usually do.

A. was preparing 　　　 B. will prepare　　 　　 C. have prepared　 　　　 D. prepared

28. An earthquake ______ Indonesia on October 25, 2010, ______ about 1000 people to be killed.

A. hit; causing　 　　　 B. hitting; causing　 　　　 C. to hit; caused　　　 　 D. hit; caused

27. -- Will you go swimming with me this summer vacation?

　 -- ______.

A. It's none of your business　　　　　　　 　 B. It all depends

C. It's all right　　　　　　　　　　　 　　　 D. It doesn't make any difference

26. As a father of three girls, I 'need a job ______ so we can survive.

A. deeply　　 　　　　　 B. crazily　　　　　 　 C. closely　　　　　 　　 D. badly

25. Most US Citizens retire around the age of 62, ____ is the national minimum retirement age.

A. when　　　 　　　　 B. which　　　　　 　 C. it　　　　　　　 　　 D. that

24. She searched all the places where she ______ have left her necklace but it was all in vain.

A. might　　 　　　　　 B. would　　 　　　　　　 C. must　　　　　 　　　 D. should