单选题 You ______ your classmates if you had made an effort last term.
A. had caught up with B. would catch up with
C. would have caught up with D. have caught up with

【正确答案】 C

【答案解析】[考点] 虚拟语气。表示与过去事实相反的假设时，if从句用had made，则主句应当用“would have+过去分词”结构与之呼应。