(2013·安徽，28)I to my cousin's birthday party last night, but I was not available.
A. went
B. had gone
C. would go
D. would have gone
网友回答
A. went
B. had gone
C. would go
(答案→)D. would have gone
解析：
考查虚拟语气。句意：昨晚我本想要去参加我表亲的生日聚会，但我没空。选项中能表示对过去虚拟的只有D答案：用情态动词过去式后加have done表示。