单选题 The chairman proposed that (every speaker) (must) limit (himself) (to) fifteen minutes.
  • A. every speaker
  • B. must
  • C. himself
  • D. to


【正确答案】 B
【答案解析】应改为should。propose桃提议，建议，后面要加should的虚拟语气，should可以省略。