JohnandSam________friends.________

发布时间：2020-07-26 08:34:14

John and Sam ________ friends. ________ bikes ________ over there.A.is, They, areB.are, Their, areC.is, Their, isD.are, Is, is

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B解析John and Sam作主语，谓语动词应用系动词are．bikes前缺少定语，所以应用形容词性的物主代词their．第三空格主语是bikes该用are．
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