Answer:
I feel like there are more than one answer but I'll say what I think is right.
Tu estas bonita
Nosotros somos tranquilas
Mario y yo somos atleticos
Nosotros somos buenos
Hi. ¿Te gusta el gimnasio?- Sí, me gusta el gimnasio.
Answer:
I do not know what you are trying to say it's either your asking a question or just telling us some facts.
Explanation:
If you want to say "some of my friends are girls" then: Algunos de mis amigos son chicas.
We always use feminine pronouns (pronombres femeninos) for feminine nouns (sustanitvos femeninos).
You have to say "algunas de mis amigas"
It depends on what you want to say...
If its to indicate something they do then say: "de todos mis amigos, algunas de las chicas [add verb here]. Meaning: From all my friends, some of the girls [verb].
If you need more help, don't be afraid to ask me! ^^ Spanish is my native language
~Hope this helps~ ^-^