I sooner but I didn't know that they were waiting for me.A. had come B. was comingC. woul

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：选D考查虚拟语气。句意：我本来可以早来，但是我不知道他们在等我。换句话说，如果我知道他们在等我，我就会早来。此处虚拟条件通过but暗示出来，模式为“虚拟情况＋but＋真实情况”。