答案:B.本题考查定语从句的关系词.由题干可知,先行词是theuniversity,代入定语从句中为:youvisitedtheuniversity.由此可知,先行词在定语从句中作宾语,且先行词指代“事物”,则关系代词用that、which或省略关系代词that/which.
若将本题改为:Isthisuniversity_____youvisitedlasttime?则此处缺少先行词,选项C符合题意.分析此题,将其变为陈述句:Thisuniversityis______youvisitedlasttime.此时,设空处缺少先行词theuniversity,用theone来代替.