Tom is the only one of the students whoa scholarship since last year.A. has wonB. have won

问题补充：

Tom is the only one of the students whoa scholarship since last year.

A. has won

B. have won

C. is winning

D. wins

答案：

(答案→)A. has won

B. have won

C. is winning

D. wins

解析：本题考查主谓一致。题中的先行词为one，故从句中的谓语动词用单数，再根据时间状语since last year，故用现在完成时。选 A。