Составить 10 предложений (modal verb)

1. He can swim.
2. They may do it tomorrow.
3. He must wear uniform 
4. You mustn't smoke here. 
5. He had to come yesterday.
6. He could swim when he was a child.
7. She should learn more. 
8. May I come in?
9. He has to walk a dog. 
10. Can he do it?