题目内容：

I was waiting to () the road.原句:I was waiting to walk across the road.
The car stopped()()and()()the boy.
While you are riding abike ,()(),()() the risk of an accident

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追问：

I was waiting to () the road.I was waiting to walk across the road. The car stopped()()and()()the boy.The car stopped before hitting the boy.

追答：

I was waiting to (cross) the road.I was waiting to walk across the road. The car stopped(in)(time)and(didn't)(hit)the boy.The car stopped before hitting the boy.