1,____,Iwouldhavephonedyou,a,ifIknewitb,hadIknownitc,ifIknowitd,didIknowit.2,itwasbecauseofbadweather_____thefootballmatchhadtobeputoff.a,sob,sothatcwhyd,that3,scarcely____theroom___thephonerang.a,Ihad
1,____,Iwouldhavephonedyou,a,ifIknewitb,hadIknownitc,ifIknowitd,didIknowit.2,itwasbecauseofbadweather_____thefootballmatchhadtobeputoff.a,sob,sothatcwhyd,that3,scarcely____theroom___thephonerang.a,Ihadentered,whenb,hadIentered,thenc,hadIentered,whend,haveIentered,when,选哪一个并说明理由,