the first problem is that many teenagers feel stressed. because they have too much homeworkto do ,they do not have enough time for their hobbies. i their hobbies. i think such students shoul make a plan for their siudy and hobies, and find some time to relax as possible as they can. The second, not only too much homework but also bad reading and writing habits are making many teenagers get short-sighted. if they pay moreattention to forming a correct habit of doing homework and reading, the will feel better.And anotherproblem is that some high school students often fight with each other. the reason is that they don't know how to get on well with each other. they are supposed to make some good friends who can understand them, and if they have problems, the can share with each other.