题目内容
He is the only one of the students in our grade who ______ a winner of scholarship for three years.
A.is
B.are
C.have been
D.has been
答案:D解析:语意:他是我们年级唯一的三年都获得奖学金的学生。for three years是完成时的标志,先行词是the only one而不是the students,故应选D。
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