问题描述：
May we go home now?No,you___.You______ to go home until 5 o'clock 选项如下,
A.mustn't;are allowed B.don't have to;are supposed C.needn't;aren't allowed Dcan't;aren't supposed
A.mustn't;are allowed B.don't have to;are supposed C.needn't;aren't allowed Dcan't;aren't supposed
问题解答：
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