----I’m going to the United States.

---- How long ____you ____in the States ？

A. are; stayed B. are; staying

C. have; stayed D. did; stay

B

【解析】

試題分析：句意：---我將要去美國了。---你要在美國呆多久？故選B。

考點(diǎn)：考查時(shí)態(tài)辨析

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