Today pollution has become a more serious problem to us. The air, the water and the land are polluted by waste or poisonous things. It does harm to human beings, animals and plants.
We can not have fresh air because many factories have sent poisonous smoke into the air. Beautiful parks are made dirty by plastic tins and bags. Fish die from polluted water. Strange diseases have appeared in some places because of pollution.
I hope scientists can find ways to solve the serious problems. We are looking forward to seeing clear sky, clean rivers and beautiful parks again.
1.do harm to：对……有害
2.look forward to：期盼