What subject pronoun would you use when talking to your aunt?
Answer : 1.) Usted
Explanation : "Usted" is the formal second singular person pronoun, used to show respect towards our interlocutor and should be used courtesy to talk with older people and teachers, police, etc.
You do not give money to the dog everyday, you give food to the dog everyday. I believe comer would not be conjugated since "Doy" is already in the "yo" form.