单句改错。 1. Cet up early tomorrow. If don't

问题：

单句改错。

1. Cet up early tomorrow. If don't,you'll miss the first bus.

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2. I asked him to see the film,but he didn't want.

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3. -Are you a secretary?

   -No,but I used to.

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4. Work hard though young,or you'll regret.

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5. You'd better make some changes where is possible when you are reading my paper.

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