5、lyD.alone;alone5.-Is your father a teacher?-Well, he _______.Nowheisadriver.A.used to B.was used toC.used to be D.is used to be6.Morethan20people_______intrafficaccidents_______lastMay.A.aredead;forB.havebeendead;sinceC.havedied;sinceD.havebeendead;for7.Hisfathero