Choose the correct modal verbs to complete the health advice.
1. I’m sorry, you can’t see the doctor today. You have to / mustn’t make an appointment.
2. You don’t have to / shouldn’t eat if you have stomach ache, but it’s important to drink.
3. You needn’t / should worry – it isn’t a very serious operation.
4. It’s important to rest. You don’t have to / mustn’t do anything for a few days.
5. I think you’ve got a fever. You ought to / shouldn’t see a doctor.
6. You don’t have to / should drink lots if you have a cold or a sore throat.