根据下面短文内容,在短文的空格处填上一个恰当的词,使短文完整、通顺.
Whenyoutalkwithsomeone,you'llneedtoendyourconversationatsomepoint.Andtherearemanyreasonswhyyouneedtodothat.Eitheryouortheotherpersonmayneedtocontinueanactivitysuch (78)___workingorshopping.Oryoumayhaverunoutofthingstosay.Youjustwanttokeeptheconversationshort.
But (79)___doyouendaconversationinapoliteway?Itmaydependonwhereandhowtheconversationstarted.Itmayalsodependonyourrelationshipwiththe (80)___ person.Ifyoualreadyknowthatperson,youcanjustsay,"Ineedtorunnow."Oryoucansay,"I'llcatchyoulater."Youmayalsogiveareasonforendingtheconversation."Ireallyneedtogo-mypianoclassstartsinten (81)___."
Perhapsyoujusrmeetsomeoneinasocialsituation,andyouhaveanicetalk.Butthenyouhavetogo.Youcansay,"Itwasnicemeetingyou.Maybewecantalkhappily(82)___ sometimeinthefuture."
Anotherwaytoendaconversationistomakeiteasyfortheotherpersonto(83)___.Ifyouseetheotherpersonisalreadynotpatient,youcansay,"Well,I'msureyouhavealottodotoday."
Youcouldusethese (84)___toendaconversation,andyoushouldnoticethatothersmayalsousethem.(85)___theydoso,youshouldknowthatit'stimeforyoutostopandgetonwithyourday.