57. It is necessary for everyone to brush his. ________ after each meal. (tooth)

56. ---Would you mind my opening the window?

　 　---______.

A) Never mind.　 　　　B) Certainly not.　 　　C) No. I wouldn't　　 　D) Yes. I'd love to.

55. ---Shall I get you some more milk?

---______I have had enough.

A) No. you needn't　　　　　　　　　 　　　　B) I'm afraid you can't

C) I'm glad you like it.　　　　　　　　 　　　D) I'm very' happy.

54. Mike's parents were worried that he ______too much time chatting online.

A) paid　　　　　　 　B)cost　　　　　 　　C)took　　　　　　　 　　D) spent

53. Many Junior Three students ______their hobbies because of their busy school work.

A) stay up　　　　　 B) take up　　　　 　　C) give up　　　　　 　　D) put up

51. More and more foreigners are living and working in Shanghai at present. The underlined part means "______".

A) at a time　　 　　　B) at the moment　 　　C) just now　　　　 　　　D) from time to time

52 Father lost temper after he was told her daughter stole a mobile phone from her desk mate. The underlined part means "______”.

A) became angry　　 B) held his breath　　 　　C) went wrong　　　 　　D) ran away

48. Don't go out, ______you'll be caught in the rain.

A) and　　　　　　 B) since　 　　　　　　C)or　　　　　　　　　 D) until

49- Susan finally became a popular singer after she practiced ______ for years.

A) sing　　　　　 B) to sing　　　　　　 C)sang　　　　　　　　 D) singing

50 If you travel around the world, you will be surprised at_______.

A) how different the foreign customs are　　　 B) how the foreign customs are different

C) how different are the foreign customs　　　 D) how are the foreign customs different

47. You had better let John ______milk and bread for breakfast himself. He's ten years old now.

A) buys　　　　　 　　B)buy　　　　　　　 C) to buy　　　　　 　　D) buying

46. ---Alice, where did you go last night?

---I ______to go to Tom's birthday party.

A) asked　　　　 　　B) have asked　　　 C) have been asked　　 　D) was asked

45. A record number of people ______Shanghai An Museum since it charged no entrance fee (费)in early March.

A) have visited　　　　 B) will visit　　　 　C) had visited　　　 　　D) visited