I sooner but I didn’t know that they were waiting for me .A. had comeB. was comingC. woul

问题补充：

I sooner but I didn’t know that they were waiting for me .

A. had come

B. was coming

C. would come

D. would have come

答案：

A. had come

B. was coming

C. would come

(答案→)D. would have come

解析：句意：要不我早来了，但是我不知道他们在等我。But后的内容可知我不知道他们在等我，因此我也没有早来。But后是真实的事实，相当于一个条件。But前是对过去的虚拟，对过去的虚拟主句应该用would have done，根据句意故选D。