选词填空Wateristhe"lifeblood"ofourearth.Likeairandsunshine,itisveryimportant31livingthings.Withoutwater,therecanbe32lifeontheearth.Allanimalsandplantsneedwater.Manalsoneedswater.Weneedwatertodrink,tocook
选词填空
Wateristhe"lifeblood"ofourearth.Likeairandsunshine,itisveryimportant31livingthings.Withoutwater,therecanbe32lifeontheearth.Allanimalsandplantsneedwater.Manalsoneedswater.Weneedwatertodrink,tocookandtoclean33.Iteven34thegreaterpartofourbodies.Waterisalmosteverywhere.Eveninthe35placesoftheworld,thereiswaterintheair.However.wecandrinknotseawaterbutfreshwater.Tomakethingseven36,peopleoften37tokeepthewaterclean.Theythrowrubbishintorivers,lakesorseas.Sonotallthefreshwateris38forustodrink.We'reshort39water.Somethingmustbe40tostopthis.()31.A.byB.toC.ofD.towards()32.A.noneB.notC.muchD.no()33.A.himselfB.ourC.usD.ourselves()34.A.madeofB.makeC.makesupD.madein()35.A.driestB.wetterC.drierD.beautiful()36.A.bestB.worseC.worstD.better()37.A.decideB.tryC.failD.take()38.A.cleanenoughB.enoughcleanC.enoughgoodD.dirtyenough()39.A.forB.inC.atD.of()40.A.doB.didC.doingD.done