【题目】 If Peter ________ harder in the senior high school, he would be a college student now, too.
A. had worked B. have worked
C. should work D. worked
在线课程【答案】A
【解析】
试题分析：A考察虚拟语气。If条件状语从句中，与过去相反，从句谓语动词用had+过去分词，如果皮特在高中时努力学习了，他现在也会是个大学生，很明显是与过去相反的事实，故选A。