单项选择题

All flights ______ because of the storm, they decided to take the train.

A．having canceled
B．were canceled
C．having been canceled
D．have been canceled
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单项选择题
The news item about the fire is followed by a detailed report made ______.
A．on the spot
B．on the site
C．on the location
D．on the ground
单项选择题
I'd rather you ______ those important documents with you.
A．don't take
B．didn't take
C．won't take
D．not take
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