Singular or Plural?
sky
Singular
Costumes
costume
day
days
Plural of Foot
Feet
books
plural
pumpkins
pumpkin
grape
grapes
Singular of Mice
Mouse
I have many cats.
Plural
Guesses
Guess
brush
brushes
Plural of Child
Children
I love this movie.
Singular
Teeth
tooth
box
boxes
Singular of Leaves
The lens in my telescope is dirty!
Singular!
Plural is lenses
sheep
sheep
woman
women
Plural of Cactus
Cacti