◎ 题干
—I studied in the United States for 3 years.
—_______.
A.So I did.B.So was I.C.So did I.D.So do I.
◎ 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 studied in the United States for 3 years. —_______.A.So I did.B.So was I.C.So did I.D.So do I.…”主要考查了你对  【全部倒装】【部分倒装】【省略句】  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。