Mobile phones are becoming 1  with students. They become a problem for middle schools these days.

Many people like SMS (短讯服务) because it's easy and 2 . Some parents feel happy 3 they can get in touch with their children. But mobile phones can 4 students much trouble in their classrooms. Sometimes students may use phone 5 to cheat (作弊) during exams, and usually sending messages in class may hurt 6 fingers.

Many teachers think that students can't be allowed (允许) to have phones at school. 7 if there's a necessary (必要的) reason, they can 8 their phones at their teachers' office. Many people understand 9 parents want their children to have them, but school should let the students 10 the time they can use their mobile phones.