1. The man we followed suddenly stopped and looked as if ______ whether he was going in the right direction.

　 A. seeing　　 B. to see　　 C. having seen　　 D. to have seen

59. in pairs 两人一组；结对　　　　　　　 60. for a while一会儿

56. a roll of 一卷　 57. toilet paper手纸　　 58.move on 接下去；继续

54. glare at怒视/ stare at凝视，盯着看/ glance at 瞥见　 55. bump into撞上；不期而遇

53. hold out伸出；拿出；继续；维持；

52. It is one’s duty to do sth.做某事是某人的责任　　

51. burst in打断；闯入/ burst into the room闯入房间/ burst out突然开始

49. tear sth. in two把某物撕成两半　　　　　　　　　　　　 50. chase sb. away/off 把某人赶走

47. must have forgotten to do sth. 一定已忘记做某事 48. fall down倒下；(计划等)失败

46. in reference to／in regard to／regarding 关于．．．