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
The luxurious car _________at the gate of the hotel and three men got out carrying a heavy metal box.
A．drew in
B．drew on
C．drew up
D．drew out
单项选择题
In only 20 years the country has been _________an advanced industrial power.
A．transported to
B．transmitted from
C．transformed into
D．transferred to
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