题目内容
【题目】At home, we mustn't play with matches. (改为肯定句)
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【答案】At home, we must play with matches.
【解析】
原句句意：在家，我们不能玩火柴。改成肯定句，要把mustn't改为must，其余不变。故答案为At home, we must play with matches.
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