a child
children
a mouse
mice
a fish
fish
a man
men
a key
keys
a bus
buses
a tooth
teeth
a banana
bananas
a fox
foxes
a tomato
tomatoes
a clock
clocks
a flower
flowers
a baby
babies
a watch
watches
a goose
geese
a woman
women
a leaf
leaves
a bison
bison
a deer
deer
a brush
brushes