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
Professor Johnson is said to have made some _________advance in his research in the past year.
A．prominent
B．numerous
C．magnificent
D．significant
单项选择题
She was so angry that her face was _________of blood.
A．dropped
B．drained
C．spilt
D．dripped
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