单选题I didn’t know his ad

问题补充：

单选题Ididn’tknowhisaddressyesterday,otherwiseI__________himavisit.A.would payB.would have paidC.paidD.had paid

答案：

B解析考查虚拟语气。陈述句，+otherwise+虚拟语气；根据前面一句话可知，是与过去是相反，所以主句中应是would have done.