Answer:
usted
Explanation:
usted is more formal. if not certain which to use, use usted instead of tú considering its better to be more formal than less formal.
Answer:
Why is Rebekah happy?
Because it's the last day of school.
Because this year has been very difficult.
Because she ended up with her boyfriend.
Because he has good grades.
There you go
Answer:
A vivieron
Explanation:
Because ellos could be used as a pronoun for sus padres, so it would be vivieron.