You should... 1. make sure that the paper and the glass you throw away will be kept in a proper place. 2. use a bike or walk when you travel short distance. 3. take a bus when you travel long distance. 4. use your own car less often. 5. turn off the lights when you leave a room. You shouldn’t... 1. throw things away if they can be reused, repaired or recycled. 2. turn on the lights when your room is still bright enough for you to work. 3. make too much noise. 4. throw wastes into a river. 5. use more water than you need. Why should we try our best to be green
A. To have more trees. B. To save our world. C. To make us richer.