Welcome to the forum.
Years ago while our children were growing up, we used to be involved with exchange students. We had 2 girls from Croatia, Tamara and Marina. They both ended up staying with us for 3 and 4 years. It was supposed to be for one year. We really enjoyed their company. Both ended up speaking English like it was their native tongue. Tomara is now a doctor in your country and Marina was working as an international tour guide. Have not heard from either of them in a long time.