单项选择题

The new buildings here are all reinforced with steel, ______ safety in case of an earthquake.

A. for the sake of
B. for good
C. for instance
D. for the better
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单项选择题
Burglars ______ and stole some money while the family was away.
A. broke up
B. came to
C. broke in
D. built up
单项选择题
Hardly ______ the TV ______ the electricity was cut off.
A. had I turned on…when
B. did I turn on…than
C. have I turned on…before
D. does I turn on…after
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