A：Goodmorning．BeijingTradingCompany．MayIhelpyou?B：Goodmorning．ThisisMr．SmithofKingElectronicsCompa-ny．I'dliketospeaktoMr．Zhong,please．A：WehavetwoZhongshere．IsthatBobZhong,orJohnZhong?B：Bob．A：Mr．BobZhongintheOverseasSalesDivision?B：Right．A：I'msorry,he'snotintheofficenow．B：Doyouhaveanyideawhenhe'llbeback?A：I'msorry,Ihavenoidea．B：Canyouaskhimtocallmewhenhecamesback?It'surgent．A：Yes,Iwill,Mr．Smith．B：Thankyou．A：You'rewelcome．DialogueB（A：ReceiverB：GeorgeRichterC：White）A：Hello．ABCGompany．MayIhelpyou?B：Hello．ThisisGeorgeRichter．MayIspeaktoMr．Davis?A：I'msorrybuthe'sinShanghaionbusiness．B：Doyouhaveanyideawhenhe'llbeback?A：Probablysometimetomorrow．B：IhaveaquestionabuttheE-4800computer．Isthereanyoneelsewhocanhelpme?A：Ofcourse．MissWhiteistheexportmanager．Wouldyouliketospeaktoher?B：Yes,please．A：OK．I'lljustputyouthrough．B：Hello．ThisisWhitespeaking．CanIhelpyou?A：Hello．ThisisGeorgeRichterofBeijingTradingCompany．Isitpossibletomakeachangeinourorder?Theordernumberis1518．C：Andwhatkindofchangedidyouwanttomake,sir?B：Well,weorderedtwentyE-4800s,butwewanttochangethemtoP-6800s．L：Justamoment,please…Oh,I'msorry,buttheyhavealreadybeensent．DialogueC（A：Mary'sfatherB：Jane）A：Hello．B：Hi．ThisisJane．IsMarythere?A：I'msorry．Maryisoutrightnow．ShewentshoppingwithherMom．B：Whenwillshebeback?A：I'mnotsure．Whydon'tyoucallbacklaterthisafternoon?B：WillitbetoolateifIcallaround10∶00thisevening?A：That'sallright．Wedon'tgotobedearly．B：Thankyou．Bye!A：Good-bye．