问题描述：
照例子写句子 英语的 例子：must\you\in\laugh\library\the\not you mustn't laugh in the library
1.finish\must\my\nine o'clock\I\before\homework
2.street\must\you\play\in\football\not\the
3.Sunday\you\the\in\must\compete\on\marathon\not
1.finish\must\my\nine o'clock\I\before\homework
2.street\must\you\play\in\football\not\the
3.Sunday\you\the\in\must\compete\on\marathon\not
问题解答：
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