XI.
1. must;
2. Can;
3. May / needn't / can;
4. May;
5. Do you have to go so early? It's only 9 o'clock. ;
6. have to;
7. can / has to;
8. had to;
9. Should / needn't;
10. may;
11. Can;
12. can;
13. May
XII. Fill in the blanks with a suitable modal verb:
1. Who can answer my question?
2. Can you tell me the way to the station?
3. He has to do this task at once.
4. Should I attend this meeting? – No, you needn’t.
5. She has to be more attentive to her parents.
6. You must have shown your notes to the teacher.
7. I asked him, but he couldn't listen to me.
8. They could have visited her, she was in the hospital.
9. Nobody can translate this text.
10. You needn't come so early.
11. Your friend could have informed us.
12. Last summer we could often go to the country.
13. Your son has to do this work himself.
14. May I leave for a while? – Yes, you may .
Squier and the boy did not like the captain, but according to his advice, gunpowder and weapons were moved to the room under the master’s cabin, and the owners' cabins and their servants were placed nearby.