单项选择题

Because all production was ______ out to other firms, we can concentrate more on making business strategies, which is more cost-effective.

A. contracted
B. converted
C. compiled
D. confirmed
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单项选择题
The manager is well aware of a few other problems ______ he knows we have had with the customers in the past five years.
A. which
B. those
C. what
D. whichever
单项选择题
The decision to allow casual dresses while working will give even flexibility on the part of employees.
A. great
B. greater
C. greatness
D. greatly
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