◎ 题干
— I wonder how long you _____ in Beijing.
— Just for the weekend, then I had to attend a conference in Tianjin.
A. will stay
B. stayed
C. have stayed
D. stay
◎ 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 wonder how long you _____ in Beijing. — Just for the weekend, then I had to attend a conference in Tianjin. [ ]A. will stay B. stayed C. have stayed D.…”主要考查了你对  【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。