单项选择题

It's high time we （）something to stop road accidents.

A．did
B．are doing
C．will do
D．do

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单项选择题

If you （）your children well, you will be proud of them.

A．catch up
B．bring up
C．feed up
D．grow up

单项选择题

There are some more topics to discuss, （）the problem of pollution.

A．generally
B．especially
C．exactly
D．probably

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