单项选择题

All staff members are reminded that you should not use the executive restroom ______ you have written authorization to do so.

A. for
B. unless
C. without
D. although
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单项选择题
______ it prove necessary to send your payment by money order, please take your request to the Payments Department, where you will find the appropriate forms.
A. Could
B. Would
C. Should
D. Might
单项选择题
The company is reportedly ______ bankruptcy due to the rapid rise in resource costs, which has made its projects unprofitable.
A. next
B. nearly
C. almost
D. close to
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