Polish is my mother tongue, that's for sure. As you can see, I know some of English as well, but I'm pretty sure I would never comprehend it to the fullest, no matter how much energy I would have to allocate to achieve so. According to my study supplement from my previous batchelor studies, I know quite well Serbian, but I prefer to be a doubter in this mater. And I know a bit of French. That's all for now.
