单选题Robert wishes that he&nbs

问题补充：

单选题Robertwishesthathe________businessinsteadofhistorywhenhewasinuniversity.A.studiesB.studiedC.has studiedD.had studied

答案：

D解析因为wish后的宾语从句中的谓语动词要用过去式，此题的study business是与过去事实相反的情况，所以用had studied business。