nttocancelourtrip.ickets!M:Icantrytocallthetravelagency;maybetheycanreturnourmoney.Butbeforewedoanythingweneedtospeakwithourprofessors.W:Youthinkthey'llexcuseusfromclass?M:Idon'tknow.ButIthinkwe'regoingtohavetospeaktoallofthemanyway.W:Whydon'ttheyaddextradaysattheendofthetermbeforesummerclasses?M:Becauseofthegraduationdate,whichcan'tbechanged!W:Areothercollegesaroundheredoingthesamething?M:Iwouldimagineso!Ithasbeensuchabadwinterandwe'vemissedtoomanyclasses.Wereallyneedtomakethemup.W:Iknow,Iknow.Iwasjustreallylookingforwardtothisvacation.Theideaofthesunandthebeach!M:Oh,look,there'sProfessorHamptonrightnow!eon,let'sgoandtalktohim.21.Bone代替单数可数名词,表示泛指,这里指任何一把小刀。22.Bholdonto“坚持,持有,不卖掉”;keepon“继续”;keepupwith“跟上”;carryout“执行”。句意:我强烈建议你继续持有你的石油股,其价格肯定会上涨。23.A句中的先行词one指代前面的名词decade,表示时间;且定语从句中不缺少主
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