A terrible (事故) happened at five o'clock yesterday afternoon. Three boys were riding their bikes side by side on the street. They were talking while riding. They didn't pay (注意力) to the cars behind. The driver of the red car was driving at a high speed. He was talking on the phone with someone. When he (突然) noticed the boys, it was too late. He couldn't stop his car in time and his car (碰撞) one of the three boys. The boy (跌落) off his bike and broke his arm. He was (躺) on the ground in great (疼痛) .At the time, another white car (出现) from the (拐角) of the street. It couldn't stop, either. It hit the red car from behind. Both the drivers got out of their cars and helped the boy. The other two boys called 120 and soon, the doctors took the boy to hospital.(粗心的) driving is so dangerous. Everyone should be careful.