单项选择题




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单项选择题
People on foot can go across the road when ______ .
A．
[A] the traffic lights are green

B．
[B] they look to the right

C．
[C] the road is clear
单项选择题
When you are in England,you must remember that ______ .
A．
[A] you'd better go by bus

B．
[B] the traffic goes on the left

C．
[C] the streets are very busy
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