People are often killed while c___73______ the road. Most of them are old people and c____74____. Old people are often killed because they are careless. People should look and listen b____75____ they cross the road. A car, a truck or a bus can’t stop very q___76_____ if it is going very fast. It will travel many meters before it s____77_____. Pedestrian(行人)don’t know this. They think that a car can stop right away. It is h___78_____ for a pedestrian to know how fast a car is traveling. The only s____79____way to cross the road is to look at b___80____ ways, right and left. The correct way to cross the road is t___81____ walk quickly when the traffic l__82____ turn green.
