53.　 Is this the first time you ___ Changsha?

A. would visit　　　　 B. visited　　　　 C. have visited　　　　　　　 D. have been visiting

52.　 He ____ the United states and will stay there for quite some time.

A. has left　　　　　　　　　　 B. had been away from　　　　 C. has left for 　　　 D. will come from　

51.　 ____ we to hand in our exercise-books before breakfast?

A. Shall　　　　　　　　 B. Need　　　　　 C. Will　　　　　 D. Are

50.　 I ___ from him for several years.

A. have heard　　　　 B. didn’t hear　　　　 C. don’t hear　　　　 D. haven’t heard

49. If everybody is ____ , let’ s begin our class.

A. sat　　　　　　　 B. seated　　　　 C. seat　　　　　　 D. sitted

48. Grammar books here ____ well.

A. are sold 　　　　　　 B. sell　　　　　　　　　 C. sells　　　　　 Dd. have been sold

47.　 We ____ him as the best student in the class.

A. have thought about 　 B. think over　　　　 C. have been thinking of D. thought out

46.　 Has the doctor ____.

A. sent for　　　　　　　　　　　　　　 B. called for　　　　　 C. been sent for　　　　　　 D. been gone for

45.　 Now the school ___, we can send our children there right now.

A. is being set up　　　　　 B. has been set up　 C. was set up 　　　　　　　 D. has built up

44.　 The glass is broken. It ____ by my brother.

A. is broken　　　　　　　　　 B was broken 　　　　　　　 C. has been broken　　　　 D. broke