Learn English Software

Hi, I’m an International student in Texas. English is actually an foreign language to me. I learned English the past 2 years and I think I’m ok at it now.
However, my college required me to have 2 semester of a single foreign language, of course other than English. They don’t accept my native language, Vietnamese, as a foreign language.
So what foreign language should I learn? Spanish or French? Which one is easier?
Thanks a lot, everyone!

i can write a good english but i am not a fluent speaker in it.