题目内容：

Have you make a decision when_____ for london A.will leave B.you to leave C.you left D.to leave

优质解答

D
When to leave=When you will leave
A 因为是宾语从句,will leave主语不见了 错
B 要去掉you哦
C.决定去伦敦的时间,那还没有去呢,用过去时 错
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