Zhang Lin was addicted to computer games during his last year in high school , otherwise he ______a student of Beijing University.
A.would have beenB.should beC.has beenD.had been在线课程A
otherwise引起虚拟语气的虚拟语气属于含蓄型的，由句意可以得知是与过去的事实相反，主句用 would have done。