单项选择题

Don’t forget that any purchases over $1,000 must first be submitted to the finance section for ______.

A. on approval
B. approved
C. approval
D. approves
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单项选择题
Unfortunately, many ______ of our latest product have found faults which should have been picked up by quality control.
A. reviews
B. reviewed
C. reviewer
D. reviewers
单项选择题
144（）

A. settlement
B. selection
C. connection
D. reference
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