Mother:Oh,my baby,look at your hands!So muddy!Do wash your hands with water.
Boy:OK,Mom,but i don't know where is the water.
Mother:Oh,no,Why you are so naughty,just go to kitchen or washroom.
Boy:Mum,I have cleaned my hands already.
Mother:All right.You should wash your hand once dirty from now on.
Boy:I've got it!I just remember water to remind myself.
Mother:It sounds good!.What's the sound?
Boy:Sound?Sorry,Mum,I donot know what you mean.
Mother:Just like raining,oh,have you turned off the water faucet?
Boy:What a pity!It is my fault since i forget to shut the water.
Mother:Never waste water,you know water is the essence of life.
since nearly 75 % of the earth's surface is covered with water.But about 97% of this huge amount is sea water,or salt water.Man can only drink and use the other 3% -- the fresh water that comes from rivers,lakes and others.
Boy:i will save the water in the future.
Mother:You know when you are saving the water,you are becoming rich,since everyone should form the habit of thriftiness.
Boy:Habit is the second nature.I will correct bad habits.Water is simple but invaluable.Thank you Mom.