学进去

There ________ much traffic on the road in China now, but how can we keep the road ________. We must follow the traffic ________. In China traffic always keeps on the ________, so drivers should drive on the right of the road. Don’t drive too ________ because it’s very dangerous and you may get a ticket for speeding（超速行驶罚款单）. When the traffic light is ________ you should wait the green light, then you can drive again, when you walk on the street, you must be ________, too. Before you cross the road you must look ________ ways, first look left, then look right. Wait until the road is safe, then you can go. ________ play on the street. It’s good ________ children and old people to cross the road.