If it had not been for your help, I the examination.
A. could not pass
B. would not pass
C. would not have passed
D. can not have passed
网友回答
A. could not pass
B. would not pass
(答案→)C. would not have passed
D. can not have passed
解析：考察虚拟语气，跟条件从句要不是你的帮助，从句为过去完成时态，可知主句事情已经发生，可知选C，我不会通过这次考试。