In my opinion, teenagers nowadays are too lazy so I think they should do something to help the community. First, they should help the community protect the environment. Second, they should go to the hospital to donate blood. Besides, I think It is a good idea for teenagers to keep the environment clean by participating in programs such as collecting garbage on the streets, reusing and recycling bottles and cans. Furthermore, it would be better if teenagers help the poor and the old. For example, teenagers can help them with a lot of hard work or take care of them when they are sick. Another thing teenagers can do to help the community is to do much voluntary work. Why don't they donate their blood and join many campaigns such as green summer, world hour, etc...