单项选择题

The new employees had to go over the safety regulations several times ______ they understood them.

A．since
B．before
C．unless
D．when
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单项选择题
The team is going out to hold a party tomorrow after it ______ the project.
A．completes
B．completed
C．will complete
D．will have completed
单项选择题
The Human Resources Department, as well as the other departments, will have its budget ______ to $2 million this year.
A．to reduce
B．reduce
C．reduced
D．reducing
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