问题
选择题
—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．worked
B．was working
C．would work
D．would have worked
答案
答案：B
答案 B [句意：——昨天我们去野炊玩得非常高兴。遗憾的是你没去。——我真的应该和你们一起去，但我一直在解决剩下的那些问题。C、D两项可直接排除；A项表示过去的习惯性动作，也被排除。B项表示“ 过去一直在做某事”，符合题意要求。]