◎ 题干
— Long time no see!
— I've just returned I             to Zhengzhou for a meeting last month.
[     ]
A. am sent
B. was sent
C. am sending
D. was sending
◎ 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“— Long time no see! — I've just returned Ito 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  【被动语态】【一般过去时】  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。