◎ 题干
—It seems that you know Dr. John very well.
—Of course, we   ________     together for five years in the 1990s.
A.have workedB.had worked
C.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“—It seems that you know Dr. John very well. —Of course, we ________ together for five years in the 1990s.A.have workedB.had workedC.are workingD.worked…”主要考查了你对  【一般过去时】【一般过去时的被动语态】  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。