1. 请从下面方框中选择适当的短语并用其正确形式填空。

go ahead    cheer up    in rags    in time    take a chance    by accident    stare at    as for    account for    be about to    bring up    on the contrary

1. （1） ! You must believe in yourself and you will get success.
3. （2） They found the cave quite when they were walking across the field.
5. （3） He was in London, and came to America for further education.
7. （4） I found a woman trembling with cold at the corner of the street.
9. （5） —Shall I go on with the talk?

   —Sure. . They're all listening.

11. （6） They get down the hill when suddenly it began to rain heavily.
13. （7） Though he was told it was hard to find a job there, he still decided to .
15. （8） Last night, Mrs. Green had a heart attack. But luckily, the doctor came to save her life.
17. （9） He studies hard, which his rapid progress.
19. （10） You didn't bother me, , I like your company.
21. （11） It is bad manners to a young girl in public.
23. （12） We had a wonderful time in the country. the traffic, we had no difficulty.