one day， a student named tom in grade one was smoking in the front of the classroom.
at that time the headmaster mr green saw the student smoking and asked him which grade he was in.he told the headmaster he was in grade one and that he couldn't read yet. “ do you see the slogan ” no smoking “ on the wall? ” the headmaster asked. students in the school are not allowed to smoke and it's a bad habit for students to smoke. we know smoking does harm to students' health. they must get rid of the bad habit as soon as possible.