5．The d________caused by the hurricane did great damage to America.

[答案]　disaster

4．F________，the drowning boy was saved by a tall young man.

[答案]　Fortunately

3．Lightning is an u________phenomenon in this area for this season.

[答案]　unusual (usual)

2．Ever since their quarrel，there has been an unpleasant a________in the office.

[答案]　atmosphere

1．The twins look alike but have very different c________.

[答案]　characters

25．要不是因为他们帮忙，我们无法按时完成工作。

Had________ ________ ________ ________their help，we couldn’t have finished the work on time.

[答案]　it not been for

24．出席会议的有史密斯教授以及其他专家。

Present at the meeting________ ________ ________ ________ ________ ________.

[答案]　were Professor Smith and other experts

23．他走的时候没向我们告别。

He didn’t________ ________ ________when he went off.

[答案]　bid us goodbye

22．他能流利地讲四种语言，大家都认为他是外语天才。

He can speak four different languages fluently，and everybody thinks that he________ ________ ________ ________foreign languages.

[答案]　has a gift for

21．这么多额外的作业我真要发疯了。

So much extra homework is really________ ________ ________.

[答案]　driving me mad