单项选择题

The fact that the management is trying to reach agreement _________five separate unions has led to long negotiations.

A．over
B．upon
C．in
D．with
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单项选择题
As the economy improves, workers' fears of being laid off have_________.
A．disposed
B．discarded
C．departed
D．disappeared
单项选择题
The members suspect that it was a(n)_________attempt to prevent the truth from being known.
A．deliberate
B．meaningful
C．consistent
D．ambitious
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