◎ 题干
一Long time no see!
—I’ve just retuned I         to Zhengzhou for a meeting last month
A am sent    B was sent    C am sending      D was sending
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“一Long time no see! —I’ve just retuned I to Zhengzhou for a meeting last month A am sent B was sent C am sending D was sending…”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。