目前，有少数学生抽烟，这是一个很坏的习惯，请根据下图提示和所给的内容要点，用英文写一篇短文，劝告抽烟的学生下定决心戒烟。

　　要点：1. 时间：某日2. 地点：教室前面3. 人物： Mr Green， the headmaster； Tom， a student in Grade One.4. 劝告：抽烟危害学生身心健康，应下定决心戒掉。注意：1. 短文包括图画的内容和以上要点。2. 词数： 100 左右。3. 生词：标语 -sloganOne 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.