Translation of ox in Spanish

Lili was very nervous and feared that the entrance would be denied because she did not have any blank pages in the passport. The Visa office took our papers and pictures and handed them back five minutes later.
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.
Instead, we gave him one of our Swiss chocolates as a gift so he would leave us alone. It worked: the boy went to the couple sitting next to us and tried to sell our Swiss chocolate for 2 Pesos.