【題目】I would have come earlier, but I ________ that you were waiting for me.
A.didn't know
B.hadn't known
C.would have known
D.haven' t known

【答案】A
【解析】考查時態(tài)。從前面的would have come earlier“我本來可以來得更早”，說明過去沒能早來，是因為過去不知道你在等我，用過去時。故選A。

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