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

问题补充：

I sooner but I didn 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：考查虚拟语气。本题选项中既有表示过去事实的动词，又有表示过去动作的虚拟。句意：我不知道他们一直在等我，要不然我肯定会迅速点儿。根据句意可知，这里是对过去的虚拟，故用“would have done”的形式。