48. If you have got something to ask your teacher in class , you’d better _______ .

　 A. stay on your feet　　　　　 B. stay away from school

　 C. stay on for a bit　　　　 D. stay out so late

47. - Do you still remember _______ me somewhere in Beijing ?

　 　- Yes , of course . Two years ago .

　 A. to see　　 B. see　　　 C. seeing　　 D. saw

46. - Excuse me . Will you please tell me the way to the railway station ?

　 　- Oh , sorry ,but I don’t know . You _______ go and ask that policeman .

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

45. Computers _______ process difficult problems very , very quickly .

　 A. must　　 B. need　　　 C. should　　　　 D. can

44. The government will _______ some new colleges for more students to receive higher education .

　 A. set up　　 B. set out　　 C. put down　　 D. put on

43. The VIPs (Very Important Persons ) from 21 countries will _______ the APEC in Shanghai this autumn .

　 A. hold　　　 B. take part in　　 C. join　　　 D. attend

42. The greedy inn-keeper once made the poor heroine _______ twice a day .

　 A. dance　　 B. dances　　　　　 C. danced　　　　　 D. to dance

41. The doctor _______ the old man carefully and found something wrong with him .

　 A. looked at　　　 B. looked up　　 C. looked over　　 　　　　D. looked for

40. - Must I finish my homework now ?

　 　- No , you _______ . You _______ do it this evening .

　 A. mustn’t ; can　　　 B. needn’t ; may　　　 C. can’t ; must　　　 D. needn’t ; must

39. This key _______ for locking the door .

　 A. is used　　　　　 B. used　　　 C. use　　　 D. are used