单项选择题

A． Manager and secretary.
B． Doctor and patient.
C． Shop assistant and customer.
D． Taxi driver and passenger.
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单项选择题
A． Is that so earlyB． Must you leave so soonC． I’m sorry.D． I’ll see you then.
A． Is that so early
B． Must you leave so soon
C． I’m sorry.
D． I’ll see you then.
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