I feel like it could be 3rd or 4th but 3rd seems more convincing
in english its: where do you go to send/mail a card/letter
Lupe nos muestra la revista a nosotros.
Or
Lupe nos esta mostrando las revistas.
Answer:
??? what are you asking for help
Explanation:
Antonio's familia es grande
You should use the form "Ud" when speaking ti the principal of your school.