9. We didn't know what made him change his mind so        (突然地) .

8. The        (辨認) of the crash victims was a long and difficult task.

7. Your return ticket is        (有效的) for three months.

6. This vase is very valuable and fragile,you must handle it with extreme       (謹慎) .

10. In this resort,you can enjoy all the comfort and        (便利) of modern tourism.

2. Many talented college graduates are        (申請) civil service posts though they aren't well paid.

3. Everyone had better not        anybody        (給.. 打電話) if he or she is driving.

4. We'd better        (著手) doing this work right now so as to get it completed on time.

根據(jù)中文提示用短語的適當形式填空

1. Nobody will be easily successful until they        (經(jīng)歷) many hardships.

書面表達

假設(shè)你是李平，你的美國筆友Jack問了你一個有趣的問題：如果你可以擁有一個你的克隆體，期限為一天，你會讓它做什么？請根據(jù)自己的實際情況，發(fā)揮想象，給他回一封郵件。注意：1. 詞數(shù)100左右；

2. 可以適當增加細節(jié)，以使行文連貫；

3. 開頭和結(jié)尾已給出，不計人總詞數(shù)。

Dear Jack,You asked me a very interesting question. If I could have a clone of myself for one day,I would have it do the following for me.                                                                                                            

That's my answer to the question. What about you?

                                                Yours,

                                                Li Ping