Modal Verb Completion:
- You must (be) joking! That can't (not be) your real name!
- According to the rules, all participants must (wear) safety gear.
- You should (apologize). It was clearly your fault.
- We shouldn't (buy) tickets in advance - they're available at the door.
- May I use your phone? Mine's out of battery.
- If you practice daily, you will (improve) your pronunciation quickly.
- You shouldn't (eat) so much sugar! It's terrible for your health.
- She could (ask) for help instead of struggling alone.
- If I were you, I would (not accept) that job offer. The salary is too low.
- They must have (arrive) by now. The traffic was horrible, though.
Answers: 1. must, can't 2. must 3. should 4. shouldn't 5. May I 6. will 7. shouldn't 8. could 9. would 10. must have