nsleepslatethenextday.1-------5ACBBC6------10AABBC11----15CBACB16----20CACBA21----25CDBCD26----30DACBC31----35DABCB36----A41----45DABDC46----50BDBBA51----55BCACB56----61----65ADCAC66----70BDCBD71----75ABABC76.去掉the77.breaks改为broke78.unfortunate改为unfortunately79.refused后加was80.dish改为dishes81.in改为on82.去掉more83.deliciously改为delicious84.had改为has85.正确OnepossibleversionDearDavid,I’mgladtohearfromyou.Astoyourquestion,inmyopinion,airtravelhassomeadvantagesovertraintravel.First,itcansavetime.AsIknow,youcanflytoGuangzhouintwohours,butbytrain,youneed20morehours.Second,fortable.Buttraintravelhasitsownadvantages.TravelingtoGuangzhoubytraincostsonly550yuanwhiletravelingbyairwillcostyou1,200yuan.Besides,youcanenjoytheviewsofmanyplacesoutsidethetrainalongtheroute.ordingtowhatIhavetoldyou.Bestwishes!Yours,
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