1 . 教师应设法使课堂富有生气。
A teacher should try to ________the class.

2 . Due to acid rain, a large piece of forest in that country is believed ________ with extinction.

A．to threaten

B．to be threatened

C．to be threatening

D．to have threatened

3 . If you want to a________ for setting up a new club, make sure your school doesn’t have a similar one. (to make a formal request, usually in writing, for sth.) （根据首字母单词拼写）

4 . 上周，我的家乡出现了严重的雾霾，使得天空暗得什么也看不见。
Last week, severe haze struck my hometown, making it ________ anything.

5 . 她的心愿是到国外进修。
Her wish is ______for advanced study.

6 . He had to brake hard to __________________________.
他不得不踩刹车来避免撞到那只鹿。

7 . My life is ruined and I suppose I only have myself to b________. (v. to think or say that somebody/something is responsible for something bad.) (根据首字母单词拼写)

8 . 谁也没想到他会有足够的勇气顶撞她。
Nobody thought he would he brave enough to__________ her.

9 . 史密斯太太随后给我发了一封电子邮件，希望能得到进一步的信息。
Mrs. Smith then sent me an e-mail, ________.

10 . 我们不得不迅速适应新制度。
We have to _______ _______ _________the new system.