Be active In my class,most of stuident are excellent and friendly. But a little of them are hopeless, They do not like studying.they liten to music ,watch movies,chat,sleep at class.I don't know why they do this .only to enjoy themselves? Maybe they have dream ,but dont know how to achieve.Maybe they dont think too much ,only to live freely. I think every teenager should be optimistic and confindent to life.do things you want to do ! Believe everying is possible!