<span>The first obstacle that France faced when building the Panama canal were the tropical and deadly diseases such as malaria and yellow fever that they were not prepared for. Due the fact that so many of their number had fallen ill, been hospitalised, or ended up dead, the French had to abandon the canal. It continued an abandoned project until the united stated picked up the hatchet again in 1904.</span>
Es una pelicula? o que ? un libro?
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~ ^-^