Many Americans have found the cell phone valuable in providing help in emergencies and free time entertainment. 39.M________， it has also brought up 40.p________ in careless driving, irritating behaviors in public and high expenses.
Cell phones are also 41.________ (流行的) in China, and many students own them. The question is 42.________ students should be allowed to use them at school. Some parents support it just for the need to communicate with their children, 43.w________ some others think it a bad idea, worrying that it will disturb usual educational 44.________ (环境).
In my opinion, 45.________ is not that necessary for us to have cell phones in school. Busy with studies and afterclass 46.________ (活动), we do not have much time to call others. 47.________， it is true that parents and students have a need to talk to each other from time to time. I suggest schools provide more pay phones on campus so that parents and students can have easier access 48.________ each other.