根据句意，用括号内所给词的适当形式填空。

1.  She sees a film_________(one)a month.

2.  Tom was_________ (illness) yesterday, so he didn't go to school.

3.  Doing exercise can help us stay_________ (health).

4.  Li Hua had a_________ (quickly) breakfast and then went to work.

5.  Don't_________ (worried) about your English.  1 can help you.

6.  It takes me an hour_________ (get)to school every day.

7.  Will you go climbing with us if it_________ (not snow) next Sunday?

8.  It's ten_________ (minute) ride from my home to school.

9.  There is a girl_________ (draw)a picture under the tree.

10.Students of English will find the book very_________.  (use)

将下列各种液体分别与溴水混合并振荡，不能发生反应，静置后溶液分层，且溴水层几乎无色的是[ ]

A．乙酸

B．乙烯

C．苯

D．酒精