Read the sentences and click on or circle the correct modal.
1. Students mustn't/don't have to use their phones in classrooms.
2. I'll be late tomorrow. I mustn't/have to go to the doctor.
3. You worked all day. You must / can be tired.
4. Can / May you turn the volume down?
5. That may / has to be Sue's umbrella, but I'm not sure.
6. I can't / might go to the party but I haven't decided yet.
7. Sorry, I don't understand. I can't / don't have to speak Spanish.
8. In some countries, you have to / can have an identity card.
9. My father could/can play the violin by the time he was ten.
10. You can't/ don't have to board the plane without a boarding pass.
11. This information can / might be correct. Please check it.
12. He can/could be French by the looks of his elegant suit.
13. You never know. Tomorrow can / could be a better day.
14. That can't/may be John at the door. He's in Milwaukee right now!
15. You don't have to / shouldn't have so much ice cream. It's not good for you.

PLISS​