Замените модальный глагол его эквивалентом: Must - Ответ на вопрос по английскому языку №6030

Вопрос

Замените модальный глагол его эквивалентом: Must we stay here until the director calls?

• Are we able to stay here until the director calls?
  
• Are we allowed to stay here until the director calls?
  
• Do we to stay here until the director calls?
  
• Are we to stay here until the director calls?
  
• Have we to stay here until the director calls?
  

Ответ