How to make our world more beautiful（如何让世界更漂亮）

Taking care of our environment is our duty.But how we can do to make our environment more beautiful? 

At firstwe must make ourselves clean.For examplewe must wash our clothes when they are dirty.We should not litter waste things aboutand draw on the wall.We mustn＇t spit in public or cut down trees. We should plant more trees around our neighbourhood.We should pick the rubbish up and throw them into the dustbin when we see them. 

We must make our world more and more beautifuldon＇t you think so?