Answer:
1) usted
Explanation:
usted is formal, reserved for people you don't know and/or for elders. Since your aunt is most likely older than you (I say most likely since i'm actually an exception :/ ) usted will be the pronoun that you use.
ir
i dont understand the difference between the first and second one
.answer:
tú cantas cuando tus padres llegan a casa. ana escucha música cuando juan llama la.
explanation: