1.We are advised to cut....on electricity usage to reduce carbon footprint A.up B.over C.down D.with 2.An apple a day can.......the doctor away A.take b.keep C.bring D.get 3.Going green can make the air we breathe cleaner and... A.healthy B.healthier C.healthily D.more healthy 4.The most obvious advantage of living green is that it helps reduce.... A.pollute B.polluting C.polluted D.pollution 5.Tìm lỗi sai và sửa This room wasn't used for years