Antonyms
Present tense
Prepositions
Past tense
Plurals
100
hot
cold
100
I ___ apples every day.
eat, peel, chop, pick, etc.
100
The apple is __ the table. 
on
100
Yesterday I ______ football. (verb: to play)
played
100
shoe
shoes
200
happy
sad
200
The students ___ to school every day.
go
200
The cloud is ____ Eeyore.
over
200
Yesterday the students ____ very tired. (verb: to be)
were
200
church
churches
300
inside
outside
300
When he does not understand, he ____ a question.
asks
300
She is walking ___ the stairs.
down
300
You ___ my cookies? Why?! (verb: to eat)
ate
300
baby
babies
400
early
late
400
Every morning the sun _____.
rises, shines
400
the cat is _____ the box.
in, inside
400
He ___ his homework yesterday. (verb: to do)
did
400
tooth
teeth
500
cry
laugh, smile
500
Do you _____ banana bread?
like, eat, bake, make, etc.
500
The dog is _______ the person.
in front of
500
They ___ the dog outside. (verb: to put)
put
500
fish
fish