Translation of simple in German

I was one time in Oxford. I'm studying social work in Austria. I'm living near Salzburg. It's in the middle of Austria. What are you doing in Oxford? Studying, teaching or working? Please stay in touch with me.
Yes I do live in the United States of America. Thanks for contacting me! I am okay with my Spanish, but when creating sentences I'm terrible at using the right form of the la, el, un y una.
The same night we went to a great restaurant in town (near the main street). We met a very friendly couple in their fifties from Buenos Aires. They told us many interesting stories about Argentina.