Fill in the gaps in the sentences, using must or mustn't.

• Группы
  • must
  • mustn't
• Варианты
  • You _____ raise your hand to answer.
  • You _____ come on time to school.
  • You _____ knock before you enter the classroom.
  • You _____ bring all your supplies with you.
  • You _____ do your homework regularly.
  • You _____ be nice to your teachers and classmates.
  • You _____ do all the tasks during the lessons.
  • You _____ get bad marks at school.
  • You _____ sleep during the lessons.
  • You _____ chew bubble gum during the lessons.
  • You _____ fight with your classmates.
  • You _____ throw paper planes around.