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.