---Do you know the boy_______ is playing football over there? ---Certainly. He is a friend of mine. ...
2022-12-09 18:55:02 55次 2016届江苏扬州竹西中学九年级上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
---Do you know the boy_______ is playing football over there?
---Certainly. He is a friend of mine.
A. whom B. which C. who D. what
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