单项选择题

We often receive various requests from customers, but ______ on real estate related contracts.

A. focus
B. focusing
C. focused
D. focuses
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单项选择题
Cars left ______ in front of the main entrance for more than one minute will be towed away immediately.
A. reminded
B. interested
C. unattended
D. convinced
单项选择题
The vice president said ______ the company is sure to downsize within 2-3 months.
A. what
B. which
C. that
D. concerning
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