- I have to brush my teeth twice a day.
- I must tell you something important.
- We must buy another ticket because this one is torn.
- If you don't have a license, you musn't drive.
- Do you have to wear a skirt for school?
- Passengers must fasten their seat belts.
- You musn't forget to feed your dog.
- You must stop of getting confused by the similarity sighs.
- I must work essay today because I have to finsh tomorrow.
- We have to go because our mom .....Mad sounded on phone.