Is that rest of the question? : because I'm willing to help out more but you need to provide more information since all I could do is speculate what you're trying to asked.
Answer:
A vivieron
Explanation:
Because ellos could be used as a pronoun for sus padres, so it would be vivieron.
Answer:
When the waiter or someone tells you thank you, yo say "<u>No hay de que</u>"
Hope that helped! :)
Explanation:
El hombre está poniendo una maleta en su coche.
