题目内容
(请给出正确答案)
[主观题]
---What should I do first before boarding? ----().A.You may ask the policeman there to hel
---What should I do first before boarding? ----().
A.You may ask the policeman there to help.
B.Please go to the airline counter to check-in for your flight.
C.You should wait and see.
D.You have to go there to check in for your flight.
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