Teenagers has a lot of time after school.Some students like playing sports,such as basketball,football,table tennis and so on.I think it's a good way of spending their time.But some students spend their time playing computer games.I don't think it's right because if they spend too much time on computer games,it's bad for their health.Students must spend most time on theri study and something good for their health.So I think sudents should go home at once after school and finish doing their homework,review their new lessons.If they have time,they can read some books,surf the internet or play sports.