问题
选择题
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
答案：D
考查虚拟语气的用法。句意为“我本来可以早点来，但我真不知道他们在等我。”but I didn’t know表示了过去时间，因此前句是对过去的虚拟，用主语+should / would / could / might + have done表达，故选D。