Theearthispolluted.airpollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭Factoriesputwasteintotheriver.waterpollutionmobilephonepollutionlitterv.乱扔n.垃圾rubbishwaste垃圾，废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱noisepollutionTherearemorecarsontheroad.1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.noisepollution________________________________________________airpollution____________________________________________waterpollution________________________________________________loudmusicplanesmobilephonesfactoriescarssmokingshipsfactorieslitteringrubbishbuildinghousesbuildinghousesloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1bListenandcompletethesentences.Whatwastheproblem?Theriverwas_____________.Eventhebottom(底部)oftheriverwasfullof_________.Therewerenomore______forfishermen(渔民)tocatch.reallydirtyrubbishfishWhatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto__________theriver.litterwastegovernmentclosedowncleanupListenagainandcheck(√)thesentencesyouhear.1.Wecouldgofishingintheriver.2.Theriverwasreallydirty.3.Theriverhasalwaysbeenthenicestriverinthistown.4.Weshouldasktheteachersforhelp.√√1cTheriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Butitusedtobesoclean!Yes,butpeoplearethrowinglitterintotheriver.Everyoneinthistownshouldplayapartincleaningitup!Makeconversationsusingthepollutionin1a.Theriverhasalwaysbeenthenicestriverinthistown.Yes,itusedtobesoclean.Whatcausedtheproblem?ButIwastherelastweekendandtheriverwasreallydirty.Factoriesarealsoputtingwasteintotheriver.Peoplearethrowinglitterintotheriver.Whatshouldwedo?Yes,everyoneinthistownshouldplayapart.Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.Whatelsecanwedo?Everyoneshouldhelptocleanuptheriver.1.We’retryingtosavet...
