（ ） 22.He is the only one of the students who ----- a winner

（ ） 22.He is the only one of the students who _____ a winner of scholarship for three years.怎么不用A啊
A.is B.are
C.have been D.has been
（ ） 23._____ of my brothers are reporters.Covering events,meetings,or sports meetings ______ their duty.
A.Each,are B.Both,is
C.Neither,are D.None,is