51． If you eat less, you'll lose more weight.

　　 The _______　 you eat, the _______　 you will be.

50. Someone saw Lily go out with the strange man at around 12 o'clock yesterday evening. (改为被动语态)

　　 Lily was _______　 _______　 go out with the strange man at around 12 o'clock yesterday evening.

(B) 根据上句完成下句，使两句表达的意思基本相同，每空一词。

49． Tom broke the vase while his mother was out. (改为被动语态)

　　 The vase _______　 _______　 by Tom while his mother was out.

48． He began to teach in this school 7 years ago. (改为现在完成时)

　　 He _______　 _______　 in this school for 7 years.

47． Li Ming goes to the Internet Café once a week. (改为特殊疑问句)

　　　 _______　 _______　does Li Ming go to the Internet Café?

(A) 按要求转换下列句式，每空一词。

46． It is a beautiful day, isn't it? (改为感叹句)

　　　 _______　 _______　beautiful day it is!