You are working with possessive adjectives:
my... = mon, ma, mes
your (fam.)... = ton, ta, tes
his/her/its... = son, sa, ses
our = ...notre, nos
your (formal, plural) = votre, vos
their = leur, leurs
Now, because they are adjectives, pick the same gender (masculine or feminine) and number (singular or plural) as the adjective(s) modified!
I'll be back after you have time to do them.
Sra (aka Mme)