Fill in the gaps with the missin words. помогите пожалуйста!
1. How often 2. time 3. at 4. How long 5. fly 6. How many 7. on 8. watch 9. has, at 10. on 11. never 12. How much 13. does 14. doesn't 15. but 16. quarter 17. Do 18. because, goes 19. How old 20. do