单项选择题

All flights _________because of the heavy fog, we had to decide to take the train.

A．were canceled
B．having canceled
C．having been canceled
D．have been canceled
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单项选择题
He _________the manuscript of his book before sending it to the publisher.
A．revised
B．responded
C．repealed
D．reserved
单项选择题
Those young men were _________by the police _________causing a disturbance in the neighborhood.
A．caught up: with
B．charged; with
C．kept up; with
D．put up; with
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