单项选择题

A．He has been ill.
B．He hasn’t yet found a topic.
C．He was busy studying for an exam.
D．He didn’t know when it was due.
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单项选择题
A．Four.B．Five.C．Three.D．Seven.
A．Four.
B．Five.
C．Three.
D．Seven.
单项选择题
A．The man is a forgetful person.B．The typewriter is not new.C．The man can have the typewriter later.D．The man misunderstood her.
A．The man is a forgetful person.
B．The typewriter is not new.
C．The man can have the typewriter later.
D．The man misunderstood her.
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