Q1: cuera
Q2: cierre
Q3: ¿Viste aquellos coches?
Hope this helps and have a great day
The answer is (usted) because you dont have a personal relationship with this person.
ustedes means you guys
vosotros means all of us
tu is used for someone whom you are close with like a family member or someone whom you have know for a while.
"What do you want to say?" translates to:
<span>"¿Qué quieres decir?" in spanish.</span>