单项选择题

The author suggests that better driving habits ______.

A．are required by law
B．will not cause any accidents
C．help to keep the car in good shape
D．help save gas
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单项选择题
What is the main idea of the passage
A．Americans need to save gas.
B．Gas prices continue to rise.
C．Small cars get good gas mileage.
D．Automobiles cause serious air pollution.
单项选择题
The children ______ many times not to go near the fire.
A．have told
B．told
C．have been told
D．were being told
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