题目内容
【题目】I know that man. He be Helen’s father.
A. may B. need C. must D. can
【答案】C
【解析】句意：我认识那个人，他一定是海伦的父亲。A. may可能，B. need需要；C. must必须，一定；D. can能够。根据I know that man.判断，用must表示肯定的推测，答案为C。
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题目内容
【题目】I know that man. He be Helen’s father.
A. may B. need C. must D. can
【答案】C
【解析】句意：我认识那个人，他一定是海伦的父亲。A. may可能，B. need需要；C. must必须，一定；D. can能够。根据I know that man.判断，用must表示肯定的推测，答案为C。
