单项选择题

Questions 14-17 are based on the following dialogue. How often will the woman correct the students’ assignment

A．Once a week.
B．Once two weeks.
C．Once a month.
D．Once three weeks.
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单项选择题
A．normalB．ordinaryC．properD．appropriate
A．normal
B．ordinary
C．proper
D．appropriate
单项选择题
A．affectedB．effectedC．takenD．adapted
A．affected
B．effected
C．taken
D．adapted
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