完成句子练习:1._______________________________,Iwouldhavetotravelincrowdedbuses.(live)如果我住在城市里,我就不得不乘坐拥挤的公交车出行。2.HadIknownthatairconditionerscausesomuchpollution,I_________________________one.(buy)要是我知道空调会造成这么多污染,我就不会买了。3.Ifhe______________________________hisexperiment,hewouldhavehelpedmewithwithmyEnglish.(busy)如果他没有忙于做他的实验,他就会帮我学习英语了。4.HowIwishshe_______________________.Ifso,shewouldhavewonanothergoldmedalforourforourcountry.(careful)我真希望她当时小心一点。这样的话,她就会再为我们国家赢得一枚金牌了。5.Thefirefighters_______________________,otherwisethefactoryonfirewouldnothavehereaheadoftime.(arrive)消防队员及时赶到了,否则,失火的工厂就不会被救了。6.Luckily,webroughtaroadmapwithuswithoutwhich________________________________(get)幸运的是,我们买到了地图,没有这张地图,我们就会迷路了。7.Butforthehelpfromthedoctor,thelittleboy____________________________.(lost)要不是有医生的帮助,这个小男孩就丢了性命了。8.Ifyouhadtakenmyadvice,you_______________________________intheexamination.(fail)如果我当初接受了你的建议,我考试就不会不及格了。9.Ifhe____________________thisevening,wewouldplaycards.(come)如果他今晚来这里,我们就打牌。10.Itissuggestedthatthemeeting___________________________tillnextweek.(put)有人建议将会议推迟到下周。11.Youhavenoideahowshefinishedtherelayrace________________________________Sobadly.(injure)你不知道她脚伤这么严重的情况下是这么跑完接力赛的。12.OnlyifIgetthejob_____________________________tocontinuemystudyatcollege.(have)我只有得到那份工作,才能继续我在大学的学业。