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Modals - must mustn't

  •  English    6     Public
    Fill in the blanks with must or mustn't.
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  • You ________ stand up, Tom.
    must
  •  10
  • You ________ talk in class.
    mustn't
  •  10
  • You ________ keep off the grass.
    must
  •  10
  • You ________ climb the tree.
    mustn't
  •  10
  • You ________ spit.
    mustn't
  •  10
  • You ________ line up.
    must
  •  10