单项选择题

When ______ the room during a fire drill, please proceed calmly but quickly.

(A) exiting
(B) to exit
(C) exited
(D) exits
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单项选择题
Officers will not allow visitors to enter ______ they are not wearing a guest pass.
(A) yet
(B) if
(C) so
(D) and
单项选择题
Ricky Luis, a company salesman, was ______ by the CEO for his record-breaking May figures.
(A) congratulated
(B) entrusted
(C) realized
(D) demonstrated
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