59.　　　 _____ a pig on the road, the bus was stopped.

A. the driver seeing　 B having seen　 C . After seeing　 D. seeing

58.　　　 --- Why was the special meeting called?

---_____ the new officers.

A. electing　 B for electing　 C. elect　 D . to elect

57.　　　 ____ from his accent, he must be ____ America.

A. judged, from　 B. to judge, of　 C. judging, from　 D . judging, of

56.　　　 Nothing helps success more than　 ____ what you are doing.

A. know　 B. to know　 C. to know to　 D knowing

55.　　　 – Does anybody want an extra ticket to go to the party?

---- Whom would you rather ___ with, geoge or me?

A. have to go　　 B . go　 C. to go　 D . going　

54.　　　 ______ the cat family, the small tiger looks like a big cat.

A. being at　 B. belonged to　 C. in　 D. belonging to

53.　　　 ---- I don’t understand that sentence let’s get tom ____ the sentence again.

A. explain　 B. to explain　 C. explained　 D. explaining

52. --- I must apologize for　 ____ ahead of time.

　 --- That’s all right.

A. letting you not know　　 B　 not letting you know　

C letting you know not　　　 D letting not you know

51. Rather than ____ on a crowded bus, he always prefers ____ a bicycle.

A. ride, ride　 B. riding, ride　 C. ride, to ride　 D. to ride, riding

50. The missing boys were last seen ____ near the river.

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