It is known to all that today the environment has been badly polluted. Though many action have been taken to protect our environment, it still has a long way to go. Two years ago, I went to middle school, and the first moment I saw the environment, I found that trees were very small, and many workers were busy planting trees. Now, when I looked around our school, the trees were taller than people and they grew so fast. People always talk about planting trees but less of them can take action. ...

It is known to all that today the environment has been badly polluted. Though many action have been taken to protect our environment, it still has a long way to go. Two years ago, I went to middle school, and the first moment I saw the environment, I found that trees were very small, and many workers were busy planting trees. Now, when I looked around our school, the trees were taller than people and they grew so fast. People always talk about planting trees but less of them can take action. ...