题目内容
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[多选题]
To serve unaccompanied passengers, you have to _____ .
A.confirm the destination
B.put the valid in-flight documents in place
C.get the number of carry-on
D.check the baggage
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A.confirm the destination
B.put the valid in-flight documents in place
C.get the number of carry-on
D.check the baggage