问题
选择题
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
答案
答案：D
考查定语从句和主谓一致。定语从句的先行词是the only one，后面的定语从句中用单数，排除BC。再根据for three years可知这里应该使用完成时。句意：他是学生中唯一的一个三年一直是奖学金获得者得人。