--- Do you know the reason pilots turn off the plane’s lights before taking off?
---The practice is for the passengers to adjust to the dark an emergency.
A. why; for fear that
B. for which; in case of
C. how; for fear of
D. that; in case
网友回答
A. why; for fear that
(答案→)B. for which; in case of
C. how; for fear of
D. that; in case
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