摘要: He is the only one of the students who a winner of scholarship for three years. A. is B. are C. have been D. has been [解析]这是一个定语从句.在one前是否有定冠词决定定语从句中的谓语动词的单复数形式:one of the students中的先行词是the students.定语从句中的谓语动词要用复数形式.the only one of the students中的先行词是the only one.定语从句中的谓语动词要用单数形式.又因“for three years 是完成时的标志.所以答案为D.

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