问题描述:
【求解】I don't know___. A.when will they leave B.when they will leave C.when wouldthey leave
D.when they would leave 选B没错,但是为什么用陈述句语气呢?
D.when they would leave 选B没错,但是为什么用陈述句语气呢?
问题解答:
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