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关于polluted英语作文 No.1MiddleSchool March5 DearEditor, Ourschoolliesatthefootofamountainwithasmallriverpassingby.Itusedtolooklikeabeautifulgarden.Thereusedtobegreentreesandallkindsofflowersinourschoolyardallyearround. Butgreatchangeshavetakenplacesinceachemicalworkswasbuiltnearourschooltwoyearsago.Itproducespoisonousgasesandpoursalargeamountofwastewaterintotheriver.Theterriblepollutionhasdonegreatharmtousstudentsandteachersaswellastothesurroundings. Itstimeforustotakestepstoprotectoursurroundingsandpreventthemfrombeingpolluted. Yoursever, WangHong