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.
It’s describing a library which would be La biblioteca
Primos.
The full sentence is: Los hijos de tus tios son tus primos.
That means "the children of your uncles are your cousins"<span />
Answer:
Option C.
Explanation:
¿Por qué no me insististe? Si tú me _________, te habría ayudado.
A. hubiéramos insistido
B. hubiera insistido
C. hubieras insistido
D. hubierais insistido
The correct answer is letter C. The complete sentence is:
¿Por qué no me insististe? Si tú me hubieras insistido, te habría ayudado.