He is the only one of the students who______a winner of scholarship for three years.

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问题 He is the only one of the students who______a winner of scholarship for three years.

选项 A、is
B、are
C、have been
D、has been

答案D

解析 此句意为“他是唯…个三年里都拿奖学金的学生”。(表示唯一时,系动词要用单数,同时for three years,说明前面应该用完成时态。
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