Answer:
gustaban
Explanation:
Because, gustaban ends in a -an, which means that it applies to the they/y'all because the subject is "your parents", being plural. And -an means that what it is talking about is plural.
Gustaban
It is the correct answer :)
3. hablo
4. llegamos
5. llueve
6. no hacen esfuerzo
7. vayas
