问题补充：
--- Do you think George has passed the driving test?
--- No, If so, he his car to our college yesterday.
A. would drive
B. drove
C. would have driven
D. had driven
答案：
A. would drive
B. drove
(答案→)C. would have driven
D. had driven
解析：考查虚拟语气：句意：--你认为乔治通过驾驶测试了吗？--没有，如果这样的话，昨天他就会开车到大学了。这里的if so是隐含的虚拟条件句，相当于if he had passed the driving test表示虚拟条件句，主句是would have done（本来会做却没做）。选C
