1. 用方框中所给词的适当形式填空。 每词仅用一次。

we     drop    independence    heavy    used to

1. （1） It is important for kids to learn to be .
3. （2） We work hard at our studies, and we do homework by every day.
5. （3） We can't go out to have a picnic because it is raining outside.
7. （4） Amy was so careless that she her favorite toy bear into the water.
9. （5） My brother eat meat, but now he doesn't eat it anymore.