Ответ:
MUST:
ОТРИЦАТЕЛЬНЫЕ:
1.She mustn't go to school
2.He mustn't do his homework
ПОЛОЖИТЕЛЬНЫЕ:
1.They must be careful
2.He must know that
ВОПРОСИТЕЛЬНЫЕ:
1.Who must be first?
2.What must happen tomorrow
HAVE TO:
ОТРИЦАТЕЛЬНЫЕ:
1.You don't have to eat it.
2.We didn't have to open the letter.
ПОЛОЖИТЕЛЬНЫЕ:
1.I have to clean my room.
2.He has to act quickly.
ВОПРОСИТЕЛЬНЫЕ:
1.Does she have to write him?
2.Do you have to take my things?