I would have e 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
网友回答
(答案→)A. didn’t know
B. hadn’t know
C. would have known
D. haven’t known
解析：因为would e earlier是与过去事实相反的虚拟语气，而后面分句表示的是事实：当时我的确不知道…所以用一般过去时，选A。