A-A+
He is the only one of the students who
问题详情
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
网友回答
D
解析在“one of+复数名词+定语从句”中，定语从句一般被看成修饰复数名词，因此该从句的谓语用复数形式；在“the only one of+复数名词+定语从句”中，定语从句常看成修饰单数名词，从句谓语用单数形式。
This is one of the best novels that have appeared this year.
He was the only one of the boys who was given a prize.
由此可以排除B和C；
“for+时间段”是现在完成时态的时间状语，故选D项。