Verb conjugation of "vertiefen" 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.
Sorry that I answer so late but I was in Africa on vacation. What do you want to study in university? I think the most interesting are science studies, and it pays off, cause salaries are high.
Last week I was at the birthday celebration of my grandma. She is 95 years old and very healthy. I'm 33 years old. I work as an electrician, and I had my own company until last year.