52. China became a WTO member ____ December 11^th 2001.

A. on　　　 B. in　　　 C. at　　　 D. of

51. --- Waiter!　　　

--- ____ ?　

--- I can’t eat this. It’s too sweet.

A. OK　　 B. All right　　 C. Yes　　 D. Pardon

50. --- ____ students are there in your class?

　 --- Forty-one.

A. How many B. How much C. How long　 D. How heavy

49. --- How are you going to the train station to meet your aunt?

　 --- I’m going there ____ my car.

A. by　　　 B. in　　　 C. to　　　 D. on

48. ____. The baby is sleeping.

A. Not talk　　 B. Not talking C. Don’t talk　 D. Don’t talking

47. --- Have a good trip!　　　 --- ____.

A. Good　　　　 B. Bye-bye　　

C. Thank you　　　　 D. Have a good trip

46. My pen is broken. I need ____ a new one.

A. buy　　 B. to buy 　　　 C. buys　 D. to buys

45. --- Can I help you?

　 --- I want ____, please.

A. two socks　　　　　 B. two pair of socks　　　

C. two pairs of socks　　 D. two pairs of sock

44. --- How many ____ do you have?

　 　--- Only one.

A. shirt　 B. a shirt C. some shirts D. shirts

43. Uncle Wang is going to Beijing. He is packing his suitcase ____ clothes.

A. on　　　 B. with　　 C. of　　　 D. in