◎ 题干
— I'm going to the States.
— How long ______in the States?

[     ]

A. you stay
B. did you stay
C. have you stayed
D. are you staying
◎ 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'm going to the States.— How long ______in the States?[ ]A. you stay B. did you stay C. have you stayed D. are you staying …”主要考查了你对  【现在进行时】  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。