Verb conjugation of "verüben" in German

My name is Maria. I am 66 years old. I live in Barcelona (the capital of Catalunia) with my husband and my children. But I think my children will soon move out and live by themselves.
Yes, my Spanish is much better than your German, but it is not true that I do not want to learn with you. I think this is not an issue. Where do you come from in the U.S.? East or West coast?
I teach at the university of natural sciences. I have studied at the ETH in Zurich. At that time I started learning Spanish and I found Vocabulix. Since then I'm using it regularly with joy.