更具短文回答问题Fiveyearsago,DavidSmithworeanexpensivesuittoworkeveryday.Hesaid,"Iusedtocarryafreshsuittoworkwithme,soIcouldchangeifmyclothesgotwrinkled（起皱）."TodayDavidwearsNikepantsandasportsshi

　　更具短文回答问题

　　Fiveyearsago,DavidSmithworeanexpensivesuittoworkeveryday.Hesaid,"Iusedtocarryafreshsuittoworkwithme,soIcouldchangeifmyclothesgotwrinkled（起皱）."TodayDavidwearsNikepantsandasportsshirttotheoffice.Hehardlyeverwearsanecktie."Iamworkingharderthanever,"Davidsays,"andIneedtofeelcomfortable."

　　Moreandmorecompaniesareallowingtheirofficeworkerstowearcasual（休闲的）clothestowork.IntheUnitedStates,officewearhaschangedgraduallyfromformaltocasual.Intheearly1990s,manycompaniesallowedtheiremployees（雇员）towearcasualclothesonFriday.Thisbecameknownas"casualFriday".Butnow,ithasbecomeaneverydaything.

　　Whyhavesomanycompaniesstartedallowingtheiremployeestowearcasualclothes?Onereasonisthatit'seasierforacompanytoattractnewemployees."Alotofyoungpeopledon'twanttodressupforwork,"saystheownerofasoftwarecompany.Anotherreasonisthatpeopleseemhappierandmoreeffectivewhentheyarewearingcomfortableclothes.Inastudybyacompany,85percentofemployers（雇主）saidthattheybelievethatcasualdresshelpsimprovetherelationshipbetweentheemployersandtheemployees.Supportersofcasualofficewearalsbelievethatcasualofficewearhelpsthemsavemoney."Suitsareexpensive,ifyouhavetowearoneeveryday,"onepersonsaid."Forthesameamountofmoney,youcanbuyalotmorecasualclothes."

　　99.WhatdidDavidSmithcarrytoworkeverydayfiveyearsago?__________________________________________________.

　　100.Whydoeshewearpantsandasportsshirtnow?

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　　101.WhendidcasualFridaystart?

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　　102.Nowadays,manycompaniesallowtheirstafftowearcasualclotheseveryday,don'tthey?__________________________________________________.

　　103.Thelastparagraphtellsuswhyemployeesareallowedtowearcasualclotheseveryday.Howmanyreasonsdoesitmention?

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　　104.Whatisthepercentageoftheemployersinfavorofthecasualclothes?_____________________________________