_______ he had not hurt his leg, John would have won the race.
A. If B. Since C. Though D. When
_______ he had not hurt his leg, John would have won the race.
A. If B. Since C. Though D. When
A
有题干可知，“若不是他伤了腿，约翰就能赢得比赛了”，运用了虚拟语气，故用if。