单项选择1ConversationcallsforawillingnesstochangetheroleofspeakerswithoflistenersAitBthoseConeDthat2TomthinksthathewillbeadmittedtoHarvardUniversityButinmyopinionheisaboywhoisalwaystakingforgrantedAthatBanythingCnothingDit3WeshouldnttakeforgrantedthatwestillhavealotoftimebeforetheCollegeEntranceExaminationAthisBthatCitDsuch4ThetradetalkendedwithnoagreementasneithersidewouldaccepttheconditionsofAtoreachothersBreachingeitherCreachesanotherDreachedtheother5wascarelesshimtoleavehisumbrellainthestoreAItf