单选题 It is important that you ______ the problem with Professor Smith.
  • A.discussed
  • B.will discuss
  • C.discussing
  • D.discuss
【正确答案】 D
【答案解析】[解析] 虚拟语气用在It is important that...，It is necessary that...等句型中，that引导的是主语从句，从句中谓语动词可用should+动词原形来表示，但should通常被省略了，因而用动词原形。