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Mustn't / don't have to

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  • People __________ step on the flowers.
    mustn't
  • You __________ talk with your mouth full.
    mustn't
  •  You __________ speak Spanish to travel.
    don't have to
  • You __________ be fat to do exercise.
    don't have to
  • You __________ tear pages out of books.
    mustn't
  • I __________ study this weekend.
    don't have to
  • You __________ be sixteen to ride a bike.
    don't have to
  • You __________ be late for school.
    mustn't
  • Children __________ chat in class.
    mustn't
  • We __________ walk the dog every hour.
    don't have to
  • You __________ smoke in the car.
    mustn't
  • You __________ be young to dance.
    don't have to