—Where are Lucy and Lily?—Oh , the two girls must _______ a game in the garden now.A.playB.are playingC.playedD.be playing
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D解析试题分析:此题重点考查情态动词的用法,must为情态动词,后跟动词原形故排除B、C;根据语境:“---露西和莉莉在哪儿?”由now可知表示动作正在进行,故选D
考点:情态动词must的应用
点评:情态动词must表示肯定的猜测,“一定”后跟动词原形;must be doing表示肯定某人正在做某事;例如He must be doing his homework.他一定在做他的作业