单项选择题

A．Arrive early for boarding.
B．Carry little baggage.
C．Undergo security checks.
D．Go through a health check.
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单项选择题
A．Work.B．Play.C．Sleep.D．Both A and B.
A．Work.
B．Play.
C．Sleep.
D．Both A and B.
单项选择题
A．Drop off a paper.B．Go to a meeting.C．Find out about a course.D．See an advertiser.
A．Drop off a paper.
B．Go to a meeting.
C．Find out about a course.
D．See an advertiser.
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