◎ 题干
Unfortunately, when I arrived, Mary         , so we only had time for a few words.
A.was just leavingB.just left
C.has just leftD.had just left
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Unfortunately, when I arrived, Mary , so we only had time for a few words.A.was just leavingB.just leftC.has just leftD.had just left…”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。