Unit 2交通规则traffic rules： Stop and wait at a red light. Slow down and stop at a yellow light. Go at a green light.=Dont go at the red light. We must pay attention to the traffic lights.小作文（上学方式）I often go to school on foot. Sometimes I go by bike. Mike goes to school by bus. Amy goes to school by bus too. John goes by bike. Sometimes I go to school with John.How do you come to school?I come to school on foot.同义句：I walk to school.I come to school by bus.同义句：I take th
