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。本定语从句的先行词是the only one是一个单数名词，所以后面使用单数形式，for three years通常与现在完成时连用，所以答案为D。句意：他是学生中唯一的一个三年都获得奖学金的学生。