【题目】I would have come earlier, but I _____ that you were waiting for me.
A. didn’t know B. hadn’t know
C. would have known D. haven’t known
在线课程【答案】A
【解析】句义：我本可以早点来，但是我不知道你在等我。根据前面半句I would have come earlier中的would have come可知这是与过去事实相反的虚拟语气，连词but表示转折，后面的句子要使用陈述语气，因为前面说明的是过去的事情，所以后面也使用一般过去时。故A正确。