Describe a person you studied or worked with

I would like to describe a person that I studied with. He's actually Arabic. His name is Arabic, and we studied together at school. And often, after the school lessons, we do some extracurricular activities. So for now, these days, we do some extracurricular activities at school. And after that, we sometimes solve puzzles. He [...]

Going to talk about a person that I studied or worked with. Actually, I studied with a person named Oribig. We are close friends, and we sat at school for 11 years. Oribig is really sociable. So whenever we try to solve puzzles, he's really good at math. He also likes to solve number puzzles, [...]