Thank you for helping me. I the final exam without your timely help.
A. have failed
B. will fail
C. would have failed
D. must have failed
网友回答
A. have failed
B. will fail
(答案→)C. would have failed
D. must have failed
解析：本题考查虚拟语气。Without your timely help可以转换为if引导的条件从句的虚拟语气。本句是对过去事情的虚拟，主句要用would/should/could/migh + have done。句意：谢谢你帮助了我。没有你的及时帮助，我期末考试就不及格了。