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theearthisour(h).wemusttakecareofit.thatistosay,wemustk()theland,airandwatercleanmang...
the earth is our (h ). we must take care of it . that is to say , we must k( ) theland,air and water clean
mang years ago pullution was not so serious because there not so m( ) people there was e( )clean air , lang and water when the land or the river was dirty in one place, man moved to a( ) place. but now man is slowyly p( ) the whole world and there is not enough clean air or clean lang or clean water remember: more people ,m( ) pollution 展开
mang years ago pullution was not so serious because there not so m( ) people there was e( )clean air , lang and water when the land or the river was dirty in one place, man moved to a( ) place. but now man is slowyly p( ) the whole world and there is not enough clean air or clean lang or clean water remember: more people ,m( ) pollution 展开
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the earth is our (home ). we must take care of it . that is to say , we must k( eep ) theland,air and water clean
mang years ago pullution was not so serious because there not so m( any ) people there was e( nough )clean air , lang and water when the land or the river was dirty in one place, man moved to a( nother ) place. but now man is slowyly p(olluting ) the whole world and there is not enough clean air or clean lang or clean water remember: more people ,m( ore ) pollution
mang years ago pullution was not so serious because there not so m( any ) people there was e( nough )clean air , lang and water when the land or the river was dirty in one place, man moved to a( nother ) place. but now man is slowyly p(olluting ) the whole world and there is not enough clean air or clean lang or clean water remember: more people ,m( ore ) pollution
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