Mobile phones have become a problem for middle schools. In some schools the students are not allowed to carry them during school hous.
Using mobile phones gives teachers so much trouble. The students sometimes use them to send messages or e-mails in class. Some students even use phon message cheat during exams. Therefore, some students and their parents think they can get in touch with each other by mobile phones. They also think the students can use mobile phones to get online to study or search for inforemation.
实际上,我们能解决这个问题。 The students with mobile phones can leave phones at school offices . 或者他们可以在上课期间关机。Students can use mobile phones as long as schools let them know when they can use phones.