It’s en because hacer doesn’t sound right but hacen does
Los papeles is the plural version of paper in Spanish:
it is answer C.
Qué lástima pero estoy ocupado.
Christie y yo pensamos que el examen es difícil.
the answer is B.) usted
why? because "usted" is use to talk to an adult and "tu" is or a friend whit your same age or whit a friend
