Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
Irregular plurals
0
%
0
0
0
Back
Restart
tooth
teeth
Oops!
Okay!
cactus
cacti
Oops!
Okay!
man
men
Oops!
Okay!
sheep
sheep
Oops!
Okay!
mouse
mice
Oops!
Okay!
knife
knives
Oops!
Okay!
goose
geese
Oops!
Okay!
child
children
Oops!
Okay!
fish
fish
Oops!
Okay!
person
people
Oops!
Okay!
foot
feet
Oops!
Okay!
leaf
leaves
Oops!
Okay!
oasis
oases
Oops!
Okay!
woman
women
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies