Save water Dear friends: Water is very useful. We _____ water drink. We But there is not much water in many places on Earth. We should not We should Water is life! Save water! Save our lives! ___________ Save trees Dear friends: Trees are very useful. Wood comes from trees. We _____wood make paper. We Trees help keep the air clean. But people cut down too many trees. We should not We should Plant a tree! Green the Earth! ___________ Don’t use too much plastic Dear friends: We use too much plastic. We ___plastic make toys. We But too much plastic is bad for the Earth. We should not We should Say no to plastic bags! ___________ Save energy Dear friends: Energy is very useful. We ____energy light our city. We Most energy comes from coal and oil. But there is not much coal or oil on Earth. We should not We should Save energy. Start from me! Save energy. Start from now! ___________ 本文来源：https://www.wddqw.com/doc/05a892a67e1cfad6195f312b3169a4517723e5c1.html