Напишите плииииз 5 предложений со словом must и 5 предложений со словом dont must

1.She must do her homework every day.
2.He must think about his future life.
3.You must do as I tell you.
4.They must be waiting for us.
5.My parents must be there at six oclock.

Насколько я знаю, dont must звучит весьма странно. Must  - модальный глагол, и вспомогательный (do) вместе с ним не употребляется. Вот.
1. You mustnt feed this animal. Its very dangerous.
2. You mustnt play with the fire.
3. My sister mustnt do this exercise by her own.
4. He mustnt come here for now.
5. I mustnt talk to the strangers.