单项选择题

A) be C) to be
B) being D) been

A．be
B．being
C．to be
D．been
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单项选择题
A) associates C) employees B) customers D) servants
A．associates
B．employees
C．customers D) servants
单项选择题
A) certain C) many B) few D) any
A．certain
B．few
C．many
D．any
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