问题补充:
Thanks to my teachers valuable help, otherwise I my college entrance exam.
A. can pass
B. hadn passed
C. would not have passed
D. have not passed
答案:
A. can pass
B. hadn passed
(答案→)C. would not have passed
D. have not passed
解析:C 考察虚拟语气。由语境可知,幸亏老师给我的巨大帮助,否则我不可能通过高考,前面从句相当于一个与过去事实相反的虚拟条件句,因此后面的主句谓语动词应该是would/could/might/should have done。故C正确。