---I’m going to the U.S.A. ---How long you there? A. are; staying B. are; stayed C. have; stayed D. do; stay 查看更多

 

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— I'm going to the U.S.A.
— How long _____ you _____ there?
[     ]
A. have; stay
B. are; stayed
C. are; staying
D. do; stay

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