21. Use don’t, doesn’t, do or does.1. She … want to study here. 2. … you understand the words this American uses? – No, I … 3. I … usually feel well when I eat fast food. 4.This café … work 24/7. 5. … you have much free time? – Yes, I … . 6. I …. quite like the last book by this author. 7. … she believe everythingyou tell her? – I … think so. 8. Tony … have any brothers or sisters. Heis the only child. 9. When … the train leave? 10. What … they prefer tohave for dinner? – I … know.