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A- hey why are you throwing the garbage here 
b -(rudely) oh what is the problem, it's my issue , dont talk too much
a- listen my friend its our responsibility to clean our country
b- but this piece of paper will do nothing
a- now this is the time to change our thinking . if everyone will think like this so who will keep the surrounding clean. its our duty , we should keep our home , school , and enviroment clean
b- sorry i realise my mistake.
a- now , throw this paper in dustbin
b-thankyou for making me aware