【Thespeaker,,______forhersplendidspeeches,waswarmlyreceivedbytheaudience.A.havingknownB.beingknownC.knowingD.Known对比_______thetestpaper,thestudentputdownhispenwithasmileonhisface.AFinishingBFinishedCTofinishDHav】

　　Thespeaker,,______forhersplendidspeeches,waswarmlyreceivedbytheaudience.

　　A.havingknownB.beingknownC.knowingD.Known

　　对比

　　_______thetestpaper,thestudentputdownhispenwithasmileonhisface.

　　AFinishingBFinishedCTofinishDHavingfinished

　　分不清什么时候要加having，什么时候不要。