单项选择题

The governmental departments concerned are aware that there are downfalls ______ more cars on the roads.

A．to have
B．having
C．to having
D．on having
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单项选择题
A baby who ______ when young has the better chance of growing up successfully.
A．talks to
B．is talked to
C．was talked about
D．has talked
单项选择题
The manager disapproved of the plan that Sam had ______ over night.
A．drawn up
B．drawn off
C．drawn back
D．drawn on
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