47.(　 )____to someone , a British person often shakes hands with the stranger.

A.　 Introducing　 B. To introduce

C. To be introduced D. On being introduced

46.(　 )_____a reply he decided to write again.

A.　 Not receiving　 B. Receiving

C. Not having received D. Having not received

45.Little Franz thought of nothing but ______football .

A.　 play　 B. to play C. played　 D. playing

44.Good care must babies particularly while they are ill.

A.　 take B. taken of C. be taken D. be taken of

43.If _____,the experiment will be successful.

A.　 carefully doing　 B . it done carefully

C. carefully done　 D. doing carefully

42.-What’s the chance of there _____an election this year?- I have no idea.

A.　 is　 B .to be　 C. being D. be

41.There’s no need _______.We have got plenty of time.

　　 A. having　 B. to hurry　 C. to be hurried

　D being hurried

40.______everything into consideration ,they ought to be given another chance.

　　 A. Taken　 B. Taking C. To take

D. Having taken

39.Did you see that boy _______the police over there.

　　 A. questioned　　 B. to be questioned

　 C. being questioned D. questioning

38.I regret _____you that we are unable to offer you employment .

A.　 to have inform　 B. having inform

C. to inform　　　 D. informing