单项选择题

A．Undercover work.
B．Patrol.
C．Detective work.
D．Supervising investigations.
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单项选择题
A．A flood. B．A storm. C．Heat. D．An earthquake.
A．A flood.
B．A storm.
C．Heat.
D．An earthquake.
单项选择题
A．The tree blocked the road. B．The driver was young and inexperienced. C．The driver was distracted. D．The driver was driving the car at night.
A．The tree blocked the road.
B．The driver was young and inexperienced.
C．The driver was distracted.
D．The driver was driving the car at night.
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