请用can；may；must造句？

问题描述：

每个要写三句，第一句肯定，然后写否定和疑问句，包括回答

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最佳答案：

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.

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