Question

11. ―We all had a lot of fun at the barbecue yesterday. Pity you weren't there.

―I really should have gone with you, but I    on some remaining problems.

A. was working      B.   would work

C. worked       D.  had worked

Answer 1

11.   A   考查动词的时态。从"I really should have gone with you…"可知，过去本应该去，却没去，but后面是过去的事实，用过去进行时表示在他们烧烤的时候，"我"正在处理一些遗留的问题。故选A。