◎ 题干
- You seem familiar with Mr. John?
-Of course, we_______ together for three years in the 1990s.
A.have workedB.were workingC.are workingD.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“- You seem familiar with Mr. John?-Of course, we_______ together for three years in the 1990s.A.have workedB.were workingC.are workingD.worked…”主要考查了你对  【一般现在时】【过去进行时】【过去完成进行时】  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。