1.You can ( или can’t) go to the party.
2. You can't use a computer. Или Can you use a computer?
3. Where must you be?
4. He could play chess when he was Five.
5. Can I come in? Или May I come in?
6. Paul can play football.
7. You mustn’t smoke here.
8. Can you help me? No, I can’t.
9. Can his brother speak French?
10. She may be here.
11. He mustn’t be late.