We have to (), before going through the Security Inspection.
We have to (), before going through the Security Inspection.
A.check the documents
B.check the luggage
C.choose the seat
D.get the boarding pass
正确答案:ABCD
We have to (), before going through the Security Inspection.
A.check the documents
B.check the luggage
C.choose the seat
D.get the boarding pass
正确答案:ABCD
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