单项选择题

With the electricity______, all the machines stopped.

A．cut off
B．cut down
C．was cut off
D．was cut down
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单项选择题
Since there isn't much time left, you can just make the report______.
A．in detail
B．in short
C．in all
D．in brief
单项选择题
All flights______because of the heavy snow, we had to take the train.
A．were canceled
B．had been canceled
C．have been canceled
D．having been canceled
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