—Pity you missed the lecture on nuclear pollution. —I it but I was busy preparing for a j

问题补充：

—Pity you missed the lecture on nuclear pollution.

—I it, but I was busy preparing for a job interview.

A. attended

B. had attended

C. would attend

D. would have attended

答案：

A. attended

B. had attended

C. would attend

(答案→)D. would have attended

解析：考查虚拟语气。句意：—很遗憾你错过了那个关于核污染的演讲。—我本来要去参加的，但是我忙于准备工作面试。根据句意说明是对过去发生的情况的虚拟，故使用“情态动词+have done”。故D正确。