◎ 题干
While I _______ down the street, I _______ my classmates.
A.was walking; metB.walked; met
C.was walking; was meetingD.walked; was meeting
◎ 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“While I _______ down the street, I _______ my classmates.A.was walking; metB.walked; metC.was walking; was meetingD.walked; was meeting…”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。