◎ 题干
—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 workingB.would workC.workedD.had worked
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—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. …”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。