单项选择题

A．Tourist and guider.
B．Patient and doctor.
C．Waiter and customer
D．Manager and worker.
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单项选择题
A．We offer large orders.B．We could make them higher.C．We can cut down the cost.D．We can lower the price.
A．We offer large orders.
B．We could make them higher.
C．We can cut down the cost.
D．We can lower the price.
填空题
What should a student do if he or she wants to borrow books from the libraryThey should first produce their ______ or ID.
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