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1.I______havebeenmorethansixyearsoldwhentheaccidenthappened.A.shouldn’tB.couldn’tC.mustn’tD.needn’t2.Hepaidforaseat,whenhe____haveenteredfree.A.couldB.wouldC.mustD.need3.----Lucydoesn’tmindlendingyouherdictionary.---She_____.I’vealreadyborrowedone.A.can’tB.mustn’tC.needn’tD.shouldn’t4.You______betired—you’veonlybeenworkingforanhour.A.mustnotB.won’tC.can’tD.maynot5.MysistermethimattheGrandTheatreyesterdayafternoon,sohe_____yourlecture.couldn’thaveattendedB.needn’thaveattendedC.mustn’thaveattendedD.shouldn’thaveattended6.----Theroomissodirty.______wecleanit?A.WillB.ShallC.WouldD.Do9.---Catherine,Ihavecleanedtheroomforyou.---Thanks.You______it,Icouldmanageitmyself.A.needn’tdoB.needn’thavedoneC.mustn’tdoD.shouldn’t10.---MustIturnoffthegasaftercooking?---Ofcourse.Youcanneverbe_______carefulwiththat.A.enoughB.tooC.soD.very
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