27、The Earth is our home and it is important for us to do something to help the environment. We can turn off the lights, TVs or computers when we are not using them; use less water when we are brushing teeth or taking showers; use both sides of a piece of paper when we do our homework.

   When we stay outdoors, there are lots of things we can do to help the environment. We can pick up litter in our neighborhood ; ride a bike or walk when we can rather than ride in a car and so on. If everyone can do so, our environment will become more and more beautiful.