• Advanced modals( Correct the mistakes)
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  • This guy mustn’t be a thief, I’m sure he's not guilty!
    This guy CAN'T be a thief (negative past deduction)
  • She called 20 mins ago, so she could be home very soon.(probability)
    ..she SHOULD be home very soon.(probability)
  • It mustn’t be true, it can be a lie.
    CAN'T be true, MUST be a lie
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