51.There were knocks on the door the _____I went to bed .

A .time B.moment c.while D.result

50. 1) r found her eyes _____on the hole in the ceiling .

2)I found her _____her eyes on the hole in the ceiling .

A. are fixed　 B. fixed　 C. fixing　 D. being fixed

49.1)Think it over, _____you will get the answer.

2)Hurry up,_____ we’ll be late for c1ac;s.

A. became B. so C. or D. and

48.1) I would rather you _____tomorrow.

A. come　 B. will come C. came　 D. had come

2)Rather than _____the vegetables to go bad ,he sold them at half price.

A. allow　 B. to allow　 C. allowing　 D. allowed

47.1)Three-fourths of all scientific papers _____ published first in English.

2)Two-thirds of the information____ very useful .

A. is B. are　 C. has　 D. have

46.1) A medical team ____six nurses and a doctor has been sent to the flood areas.

2) Our team____twelve men and three women.

　　　　　 A. is made of 　 B. made up of 　 C. is made up of　 D. made of

45. 1) The headmaster _____,there have been si吻people on the list.

　2) Fifteen persons were present,_____ the chairman.

　　　　　 A. being including 　 B. included 　 c.includes 　　 D.including

44.1) I wrote him a Ie位er and suggested____ the meeting_____·

A. to put: away 　 B. to put: off 　　 C. putting; off 　 D. putting: away

2)The suggestion that John ____ at once is very good.

A. should start 　 B. must start C. started 　 D. starts

3) It is suggested that students at school

A. would not smoke 　　　　　　　　　　　　　　 B. don't smoke 　 C. not smoke 　　 D. smoking

43.1) Be careful，____ many mistakes in your composition.

2) Be careful _____many mistakes in your composition.

A. don't make B. not make 　 C. not making 　 D. not to make

42. 1) ] usually go to 0ffce by bicycle_____ it rains.

2) Your room upstairs is comfortable to live in ____furniture in it looks older.

A. except 　 B. except when 　 C. except for 　　 D. except that