1．关键句型练习答案

A had been lost(11.1-2); must have been found(11.3-4); was not returned(1.4); had

been wrapped(1.6); was sent (1.9); was paid back(1.10)

C 1 A meal has been prepared for you.

2 The book will be translated into English.

3 A telegram must be sent to him.

4 The fire had been put out before the fire brigade arrived.

5 The cat was given some milk to drink.

2．难点练习答案

1 back 2 robbed… stole 3 back 4 stole 5 robbed

3．多项选择题答案

1 b 2 d 3 a 4 b 5 b 6 d

7 c 8 b 9 c 10 b 11 d 12 b