49. He looked around and caught a man _______ his hand into the pocket of a passenger. (04北京春季)　　 A. put　 　　　　　　　 B. to be putting　　 C. to put　　　　　　　　　 D. putting

48. Alice returned from the manager’s office, ______ me that the boss wanted to see me at once.　 (04全国IV)　　　 A having told　　 　 B tells 　 C to tell　　 　 D telling

47. It shames me to say it, but I told a lie when___ at the meeting by my boss. (04全国IV)　　 A questioning　　　 B have questioned　　 C questioned D to be questioned

46. “We can’t go out in this weather,” said Bob, ______ out of the window.　 (04全国II)　　　 A looking　　　 B to look C looked D having looked

45. When first______ to the market, these products enjoyed great success.　 (04全国II)

　　　 A introducing　　　 B introduced C introduce　 D being introduced

44. Sarah, hurry up. I’m afraid you won’t have time to ______ before the party.　 (04全国I)　 A get changed　　　 B get change　　 C get changing　　 D get to change

43. Having been attacked by terrorists, ________.　 (04上海)

　　　 A. doctors cane to their rescue　　　　　　 　 B. the tall building collapsed

　　　 C. an emergency measure was taken　　　 　　 D. warnings were given to tourists

42. The disc, digitally _____ in the studio, sounded fantastic at the party that night. (04上海)　 A. recorded　　　 　　 B. recording　　　 C. to be recorded　 D. having recorded

41. The flowers __sweet in the botanic garden attract the visitors to the beauty of nature.(04上海)　　　 A. to smell　　 　　　 B. smelling　　 　　 C. smelt　　　 　 D. to be smelt

40. The flu is believed _______ by viruses that like to reproduce in the cells inside the human nose and throat.　 (04上海)

　　　 A. causing　　　　 　B. being caused　　　 C. to be caused　　 D. be have caused