1. Doctors have to treat people.
2. Teachers have to be very patient.
3. A secretary has to be organised.
4. Postmen/women have to deliver letters.
5. Sportsmen/women have to train very hard.
6. I have to work everyday.
7.She have to clean the house.
8.You have to stop smoking.
9. I have to do my homework.
10. I havo to go home.