I would have come sooner but I ______ that you were waiting.A、haven’t knownB、ha

游客2023-09-26  25

问题 I would have come sooner but I ______ that you were waiting.

选项 A、haven’t known
B、hadn’t known
C、didn’t know
D、have known

答案 C

解析 前句是虚拟语气,but引出真实情况,即过去不知道的事情,故用过去时。
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