【题目】If you my advice, you how to solve the problem now.
A. had taken; would have known B. had taken; would know
C. took; would have known D. took; would know
在线课程【答案】B
【解析】
考查虚拟语气。句意：如果你当时听了我的劝告，你现在就知道如何解决这个问题了。此处是虚拟语气，if从句表示与过去的事实相反，用过去完成时。主句表示与现在的事实相反，用would/should/could/might+动词原形。故选B.