单项选择题

It’s high time ______ about the traffic problem．

A．something was done
B．everything is done
C．anything will be done
D．nothing to be done
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单项选择题
“If John doesn’t come to work on time，he may be fired．”“Surely he isn’t so foolish ______ not to realize that．”
A．as
B．that
C．and
D．but
单项选择题
All ______ is a continuous supply of fuel.
A．what is needed
B．the thing needed
C．that is needed
D．for their needs
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