---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
网友回答
(答案→)A. was working
B. would work
C. worked
D. had worked
解析：考查时态。句意：—在昨天的烧烤聚会上我们都玩得很愉快。很遗憾你不在那里。—我本应该和你在一起的。但是我在处理一些遗留的问题。根据句意说明是在昨天烧烤聚会这一过去时间所发生的事情，使用过去进行时的时态。故A正确。