Write the third person singular forms for the given verbs.

1. We study - She studies 2. They fly - It flies 3. They wash - She washes 4. I clean - He cleans 5. We play - She plays 6. You watch - He watches 7. You like - He likes 8. I go - She goes 9. They bark - It barks 10. I carry - He carries 11. We cry - She cries 12. They fix - He fixes 13. I smoke - She smokes 14. We swim - She swims 15. I buy - He buys 16. They write - He writes 17. You sing - He sings 18. We think - He thinks