Recently, my classmates and I participated in the activity of Low – Carbon Living organized by the WWF. On the first day, we chose to go to school by bike or on foot rather than by bus or car. Before we left the classroom, we made sure the lights and the computer were switched off. In order to make full use of paper, we began to write on both sides. Besides, while shopping, we no longer used plastic bags but carried environmentally friendly ones. From .
　　I think what we did on that day was meaningful, which an help us to form. a good habit. We should also call on the people around us to do something for low – carbon living. Only in this way will the earth he a good place to live on.