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&1.ifIfwepaymuchattentiontotheearth,we'llhaveabetterworld.Ifitrainstomorrow,whatshallwedo?ifWhatwouldhappeniftherewerenowater?2.unlessunlessif...notYouwillfailinEnglishunlessyouworkhard.3.as/solongasas/solongasSolongasyou'rehappy,iwillbehappy.if,:if,;,,+bewerewould/could+.1.Ifyou_____totheparty,youllhaveagreattime.A.willgoB.wentC.goD.going2.I____hertheanswerifshe____me.A.cantell,willaskB.willtell,willaskC.wouldtell,askD.willtell,asks3.Whatareyougoingtodotomorrow?--Wellgotothelibrarytomorrowifit___.A.isntrainB.rainC.wontrainD.doesntrain4.Whatwillyoudoifyou_____totheoldfolkshome?A.goB.wentC.goingD.willgo5Illgivethebooktohimifhe___herenextSunday.A.willcomeB.comesC.iscomingD.came.6..Ifyou________(feel)tired,you_______________(have)tohavearest.7.Where_______he_________(see)thefilmifhe________________(have)time?8.Ifthere__________(be)fewertrees,there_______________(be)morepollution.9.IfMarcia_____________(live)alone,she___________________(keep)apetparrot.11.Lana________________(buy)anewdressiftheoldone____________(be)outofstyle.12.Thetwins______________(fight)ifthey_______________(argue).13.I____________(have)abakesaleifI_____________(need)moneyforeducation.14.Peter_____________(send)meabeautifulsouvenirifhe________________(tour)Spain.15.I____________(go)tothebeachifit________________(notrain)thisweek.17.__________they__________(have)amatchiftheP.E.teacher_____________(be)busy?18.Ifshe____________(get)uplate,she_____________(notcatch)theearlybus..19..What_______________ifhe_____________late?20.Ifyou___________________,yougoodmarks.21.Ifhe_________TVtoomuch,hisparents____________________unhappy.22.Everyone________________ifwe_____________abirthdayparty__________him.23.Ifit____________________tomorrow,I______________gotothepark_________you.24.She;__________________________thetripifshe___________________.25.Ifhe_________________,he_________________you.26.TomTom_________havethe________togotothe________highschoolifhe________theexams.