Resposta:
1. do. 2. is. 3. are- I'm not 4. is is 5. do - don't 6. am - are 7. does - doesn't 8. is - isn't 9 do - do 10. are - aren't 11. do - do 12. is - isn't 13. are - I'm not 14. is - is 15. do - don't
