单项选择题

A．About 50 pages.
B．It is very long.
C．About two hours.
D．It is two hours.
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单项选择题
A．Father and daughter.B．Waiter and customer.C．Teacher and student.D．Doctor and patient.
A．Father and daughter.
B．Waiter and customer.
C．Teacher and student.
D．Doctor and patient.
单项选择题
A．It doesn’t matter.B．Yes, it is.C．No, it isn’t.D．So do
A．It doesn’t matter.
B．Yes, it is.
C．No, it isn’t.
D．So do
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