---We all had a lot of fun at the barbecue yesterday. Pity you weren’t there. --
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---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
试题答案
【答案】
A
【解析】
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