Answer:
1. quieren (Amigos is plural so you need the plural version of it, not "quiere" because that's the singular version which would be used as "Mi amigo quiere viajar a Paris." if it were to be written that way)
2. sienten (It's written this way because they are two people involved, but if you used "sentio" it would be used in another way such as "Yo me siento mal" because you are referring to yourself.)
3. duermo (The correct way to be used because you're talking about yourself in the sentence. "Duerme" would be used as if you were talking about another person, "Ella nunca duerme antes de las 11 de las noche."
4. jugarias (It sounds more natural when its used this. 'Juegues' would be used as "Juegues con tus amigos a las escondidas.")
5. perdimos (There are two people, Roya and me, so you need the plural form. "Perdio" would be used for one person and preferably male so if it were a singular sentence, which it's not, it would be used as "Roya perdio en el autobus."
6. tienen (There are two parents so it is plural.)
7. puede
8. ? (what word do you want translated?)
