I would love to the party last night but I had to work extra hours to finish a report. A.

问题补充：

I would love to the party last night but I had to work extra hours to finish a report.

A. to have gone

B. having gone

C. going

D. to go

答案：

A. to have gone

B. having gone

C. going

D. to go

解析：考察would love的句型 sb would love to do sth意为，某人愿意干某事

排除BC，根据句意可知，此处意为我本想去参加聚会的，但是我要加班。

所以选择A项，表示本想去，但是后来没有去