If you ____ hard, you ____ in the exam.
A、worked; wouldn't have failed
B、had worked; wouldn't fail
C、had worked; wouldn't have failed
D、worked: wouldn't fail
【正确答案】：C
【题目解析】：【考点点击】本题考查对过去行为的虚拟。【要点透析】其结构是:If+主语+过去完成时……,主语+过去将来完成时。本句意为:如果你当时努力学习,你就不会通不过考试。
