1. 用所给词的适当形式填空。

1. （1） Everything is (light) on the moon than on the earth.

3. （2） The girl is good at (sing). She wants to be a singer.

5. （3） Mr. Wang often makes me (laugh) in the class.

7. （4） There are many (different) between you and me.

9. （5） My friend Ann doesn't write as (good) as her sister.