Tu because If you put Mi or mis son rojos it says my are red which dosen't really make sense. Since you put tu in front of son (plual) it would be they are red.
1. Nadan
2. Viven
3. Respiran
4. Miran
5. Seran
6. Leen
7. Veran
8. Estudian
9. Subiran
10. Visitar
11. Usaran
12. Ralatan
13. Viajan
14. Corren
15. Escuchan
There you go!
Answer:
aprenderte las cosas como tablas que te la memo roses.