单项选择题

A．Regular driver training.
B．Improved highway design.
C．Stricter traffic regulations.
D．Better public transportation.
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单项选择题
A．One night a week.B．Every Wednesday for three hours.C．Every other Thursday.D．Three times a week.
A．One night a week.
B．Every Wednesday for three hours.
C．Every other Thursday.
D．Three times a week.
单项选择题
A．They have electricity and hot water.B．They don’t have electricity and hot water.C．They’re like houses on wheels.D．They’re pulled behind the cars.
A．They have electricity and hot water.
B．They don’t have electricity and hot water.
C．They’re like houses on wheels.
D．They’re pulled behind the cars.
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