_____,I would not have rushed to his help.A.If
_____,I would not have rushed to his help.
A.If I knew B.If I know C.Have I known D.Had I known
正确答案是D,求解为什么选D
人气：337 ℃ 时间：2019-10-11 19:27:09
解答
这是一个虚拟条件句,主句用的是过去将来完成时,从句就用过去完成时,这种结构是需要倒装的
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