— Who's that man? Is he Mr. Brown?
— That_____ be Mr. Brown. He never walks this way.

  • A.can't
  • B.mustn't
  • C.must
  • D.can

答案

正确答案:A

知识点:情态动词  

解题思路

情态动词表推测,否定推测用can’t.

易错点

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