37. Teenagers shouldn't be particular about food but eat _______food good for their health.

A. no matter what　 B. whatever　　　 C. no matter which　 D. whichever

36.The local guide advised us to travel _______ camels because we would get lost easily　　 traveling _______foot.

A. on, by　　　　　 B. by; on　　　　 C. by; with　　　　 D. on; on

35. She won’t be able to come next week, because she ____ herself in Mount Tai then.

A. enjoys　　　　 B. will be enjoying　 C. is enjoying　　 D. will have enjoying

34. Sales of CDs have greatly increased since the early 1990s when people ____ to enjoy the advantages of this new technology.

A. begin　　　　 　　 B. began　 　　　　　 C. have begun　 　 D. had begun

33. He told me it was the reason ____ he explained just now ____ made him come late yesterday.

A. which; which　　　　　　　 B. which; that

C. why; that　　　　　　　　 D. why; which

32. How long is it ____ we visited your mother.

A. since　　　 B. that　　 C. before　　 D. after

31. Leonardo da Vinci (1452-1519) ____birds kept in cages in order to have the pleasure of setting them free.

A. is said to be buying　　　　 B. is said to have bought

　C. had said to buy 　 　　　　　D. has said to have bought

30. When we _____after a long talk，we found the children sleeping in _____beds．

A. separated；separate　　　 B. separated；separated

C. separate；separate　　　　 D. separate；separated

29. In no case_______our children do that.　

A. we let　　　　　　　　　 B. we cause　

C. should we have　　　　　 D. we should let

28. Customers are asked to make sure that they ______ the right change before leaving the shop

A. will give　　　　　　　　 B. have been given

C. have given 　　　　　　　D. will be given