◎ 题干
My Old Classmate also mentioned some important events that _______ from 1993 to 2013.
A.had happened B.was happened
C.happened D.has happened
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“My Old Classmate also mentioned some important events that _______ from 1993 to 2013.A.had happenedB.was happenedC.happened D.has happened…”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。