◎ 题干
-I joined the League _____ May 4th, 20ll.  What about you
-I have been a League member ______ three years ago.
A.in; forB.on; for .C.in; sinceD.on; since
◎ 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“-I joined the League _____ May 4th, 20ll. What about you -I have been a League member ______ three years ago.A.in; forB.on; for .C.in; sinceD.on; since…”主要考查了你对  【介词短语】【介词】  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。