【题目】If he ____hard, he would have passed the exam.
A. were to work B. had worked
C. should work D. was to work
在线课程【答案】B
【解析】
试题分析：考查虚拟语气。题意为：如果他过去好好学习的话，早就通过考试了 If引导的条件从句，如果表示对过去已发生情况的假设，则用if．.had，…would have done…结构。也可用倒装结构，Had…done，…would have done…。所以，此题选A。
考点 : 考查虚拟语气