用所给词的适当形式填空.

1. The polar bears are kind of        (aggress).

2. He was____    (surprise) to find no one in the zoo.

3. Zoos are like          (live) textbooks for young people.

4. He ________(use) to be a teacher.

5. How much do you           (weight)?

街、镇失业保险专管员，应于每月（）日之前交《失业金发放花名册》及《发放失业金汇总表》到失业保险科。

A.5

B.10

C.15

D.20