单项选择题

Are you positive that there's been no mistake

A．rational
B．reasonable
C．certain
D．bound
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单项选择题
His health had deteriorated while he was in prison.
A．became better
B．became worse
C．became stronger
D．became weaker
单项选择题
His new girlfriend had omitted to tell him that she was married,
A．failed
B．deleted
C．refused
D．rejected
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