①John had an a____:he's been knocked down by a car.②the football player was Paul's h_____when he
问题描述：
①John had an a____:he's been knocked down by a car.②the football player was Paul's h_____when he
was at school.③the old road has now been c___ up since the highway was open.
答
1 accident 事故
2 hero 英雄
3 changed ( change up 固定用法）
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