问了个老外,说选D,最后一个

　　为什么呢？？能否详细点

　　[老外的解释:Commencedmeanstobegin.initiatedmeanstotaketheleadorleadoutintheproject.Originatesmeanssomeonestartedtheidea.Embarkedmeanstobeginajourney.Yes,theyareallverbs,buteachonehasalittledifferentmeaning.Ifyouuseinitiated,youwouldhavetosay"wasinitiatedby."Ifyouuseoriginates,thatisapresenttenseform,andyouarfetalkingaboutsomethingthathappenedinghepast.Ifyouuseembark,youaretalingaboutonespecifictriporjourney.Ifyouusecommenced,itishepasttenseofastartedandsimplysaysthatthespacagestartedinsuchandsuchatime.