Fill in the blanks in the text with the appropriate verb forms.

1. am having, 2. came, 3. have done, 4. have ever visited, 5. have already seen, 6. walked, 7. went, 8. Have, 9. forwarded, 10. heard, 11. is, 12. went, 13. did not see, 14. did not hear, 15. exercise, 16. ride, 17. is