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Twochairsarebesidethedesk.Thebookcaseisbehindthedesk.IhaveEnglishdictionaryandsomeChinesebooks~mybookcase.①、A、aB、amC、theD、/②、A、ofB、atC、underD、on(选哪个?)

题目详情
Two chairs are beside the desk.The bookcase is behind the desk.I have English dictionary and some Chinese books~my bookcase.①、A、a B、am C、the D、/ ②、A、of B、at C、under D、on (选哪个?)
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答案和解析
①选B,应该是an,English元音开头,应选an.
②选D on,在书架上.