问题补充:
I would have come earlier, but I that you were waiting for me.
A. hadn’t known
B. didn’t know
C. would have known
D. haven’t know
答案:
A. hadn’t known
(答案→)B. didn’t know
C. would have known
D. haven’t know
解析:这题考查时态的用法:从前面的would have come earlier“我本来可以来得更早”,说明过去没能早来,是因为过去不知道你在等我,用过去时。选B。