请用can；may；must造句？

can造句：

1。Jogging can be harmful to the health。

2。The story can’t be true。

3。Can I go now?

  Yes, you can。/No, you can't。

may造句：

1。She may be still waiting for us。

2。He may not come today。

3。May I go home now?

  Yes, you may。/No, you can't/mustn't。

must造句：

1。He must be at home。

2。You mustn't smoke here。

3。Must I clean the classroom now?

  Yes, you must。/No, you needn't。