问题
选择题
I would have come earlier, but I _____ that you were waiting for me.
A．didn’t know
B．hadn’t known
C．haven’t known
D．wouldn’t have known
答案
答案：A
考查时态。句意：我本可以早点来，但是我不知道你在等我。根据句意，我是过去不知道你在等我，所以用一般过去时态。选A。
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