Yerterday we held ,There are fifty students in Class 5,Grade 8 at NanXi Middle School.Every day they go to school in different ways.Fifteen students take buses because they live far from the school.Ten students walk.They think walking is good for their health and they live near the school.Twenty-five students ride their bikes to school because they like riding bikes very much and their homes are not very far from the school.No one goes to school by car.20% of the parents to drive on the ground to save time,80% ride a bicycle on the grounds that physical exercise,environmental protection