Along with the development of the information technology, smart phones are popular within students. At some schools, many students are allowed to bring phones in to the classroom. even though using phones are convienent for students to communicate with others, there are still some disadvantages of using phones at school First of all, ringing of the phone will interrupt the students who are having classes. Secondly, some students stay up late playing their phones which will have a bad effect on the study of the next day. In my opinion, those students who are additcated to phones will not have good grades. As high school students, we shouldnt bring phones into the classroom. 你就按我打的写 你们老师要是说有一句错的 让她联系我 我看看我一个美国留学生还没有一个小老师英语水平高？

1, Courtesy requires a return of visits received. 谦恭有礼要求给收到的待遇一个回报。 或The reward for a good deed is another good deed. 好行为的报酬是另一个好行为。 2, Tony is working in a bank and has a high salary. 3, It surprises me that he has never done any housework. 4, I have to meet a friend at the airport tomorrow afternoon. 5, The teacher asked us to take a active part in the English Competition. 【VS天才翻译家】不断提高自己，乐于帮助大家；我们不提供不负责任的建议。