Watch the video and fill in the gaps in the sentences, using must or mustn't.

• Группы
  • must
  • mustn't
• Варианты
  • Cadets _____ do their homework regularly.
  • Cadets _____ be loyal to their country.
  • Cadets _____ get bad marks at school.
  • Cadets _____ know drill commands.
  • Cadets _____ wear uniform.
  • Cadets _____ know how to handle a weapon.
  • Cadets _____ know how provide first aid.
  • Cadets _____ sleep during the lessons.
  • Cadets _____ fight with their classmates.
  • Cadets _____ be late for school.