单项选择题

______ the young postman was busy delivering mail in the small village.

A．Day and night
B．Day by day
C．Day in and day out
D．All the day
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单项选择题
Cross the road one at a time -- don' t ______ up.
A．set
B．group
C．bunch
D．hold
单项选择题
She seemed to be ______ of deciding anything for herself.
A．unable
B．ineffective
C．incapable
D．incompetent
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