填空题 He (could) easily (have won) a scholarship if he (would have devoted) more time to his school work. A. could B. have won C. would have devoted D. his school work
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【正确答案】 1、C改为had devoted。    
【答案解析】对过去事实进行虚拟，主句用could/would have done，从句用if had done结构。