1. 单句改错（找出错误并改正）

1. （1） All what is hard is to do good all one's life and never do anything bad.

3. （2） What the boy didn't take medicine made his mother angry.

5. （3） You can't imagine how excited were they when they received these nice Christmas presents.

7. （4） That we'll go camping tomorrow depends on the weather.

9. （5） The child is always lying，so none of us will believe no matter what he says.