单项选择题

A．Patient—doctor.
B．Student—teacher.
C．Secretary—boss.
D．Waiter—customer.
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单项选择题
A．He works hard.B．He is reading.C．He feels ill.D．He is very kind.
A．He works hard.
B．He is reading.
C．He feels ill.
D．He is very kind.
单项选择题
A．What the flight number is.B．What time the flight departs.C．Where to find a telephone.D．Where to board the plane.
A．What the flight number is.
B．What time the flight departs.
C．Where to find a telephone.
D．Where to board the plane.
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