There are 18 out of 40 students in our class go to schoole by bus because of the long distance from their home to school.By coincidence,the number of students ride bike to school is as same as those by bus and the reason is that they think it's good for health.Hoever,only 10% students in out class choose to work to school beacuse their home is near the school.I go to school by bike in that I can do excersice at the same time.