---IsTomintheclassroom?---No,he______ontheplayground．A.isdrawingpictureB

发布时间：2020-08-06 19:54:31

---Is Tom in the classroom?---No, he ______ on the playground．A.is drawing pictureB.is riding a bikeC.is riding the basketballD.is mending a kite

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D解析A项中picture一词前面加冠词a或应在其后加复数-s; B项中ride的现在分词应是riding; C项中球类名词前不能加冠词．
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