单项选择题

I think we need to see an investment ______ before we make an expensive mistake.

A．guide
B．entrepreneur
C．consultant
D．assessor
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单项选择题
______ no further business, the Chairman closed the meeting.
A．There is
B．There was
C．Being
D．There being
单项选择题
The elderly Russians find it hard to live on their state ______.
A．pensions
B．earnings
C．salaries
D．donations
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