1.Pollution is a big problem now. It is very improtect our environment.
2.If everyone makes a contribution to protecting our city,Beijing will be much better.
3.I strongly suggest that we should protect our environment.
4.It is our duty to keep our city clean.
5.If everyone can do well,our world will become much more beautiful.
6.We should pick up rubbish and throw it into the dustbin.
7.We should collect wast boeeles for recycling.
8.We should plant more and more beautiful by planting more flowers and trees.
9.Beijing is becoming more and more beautiful by planting more flowers and trees.
10.We should obey public rules.
11.If everyone does a little, it will be solved soon.