完形填空 Wateristhe"lifeblood"ofourearth.Likeairandsunshineitisveryimportant 1 livingthings.Withoutwatertherecanbe 2 lifeontheearth.Allanimalsandplantsneedwater.Manalsoneedswater.Weneedwatertodrinktocookandtoclean 3 .Iteven 4thegreaterpartofourbodies.

Waterisalmosteverywhere.Eveninthe 5 placesoftheworldthereiswaterintheair.Howeverwecandrinknotseawaterbutfreshwater.

Tomakethingseven 6 peopleoften 7 tokeepthewaterclean.Theythrowrubbishintoriverslakesorseas.Sonotallthefreshwateris 8 forustodrink.We'reshort 9 water.Somethingmustbe 10 tostopthis.( )1.A.for

( )2.A.none

( )3.A.himself

( )4.A.madeof

( )5.A.driest

( )6.A.best

( )7.A.decide

( )8.A.cleanenough

( )9.A.for

( )10.A.do

B.to

B.not

B.our &nbs