I don't understand this question.
¿Qué le diste a tu madre o a tu padre en su cumpleaños?
btw I can't SHOW WHAT I THINK b/c I don't get the question. Thanks a bunch:)
What did you (familiar or casual form) give to your mother or your father on their birthdays?
thank you
Only thing is that "cumpleaños" is singular because of "su" = on her/his birthday.
Sra