a) The childrenschildren'schildrens' gumboots were all mixed up in the cloakroom.
b) Our two pet birdsbird'sbirds' flew away.
c) There is a dadsdad'sdads' race at our school sports.
d) My shirt has lost itsit'sits' buttons.
e) The zoo keeper left ten of the animalsanimal'sanimals' cages open.
f) The boysboys'boy's bikes must go in the bike stand.
g) All the dogsdogs'dog's went for a swim in the pond.
h) I like MumsMum'sMums' new hair cut.