单项选择题

People went back to the countryside when they had ______.

A．holidays
B．bicycles
C．horses
D．wagons
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单项选择题
This is a set of recommendations for ______.
A．doctors prescribing for patients
B．doctors training people who take drugs
C．drug companies
D．persons who sell drugs
单项选择题
The patients should be asked if they are ______.
A．careful about taking drugs
B．familiar with drugs
C．having babies
D．taking other drugs
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