Questions that start with "What"
Questions that start with "who"
Questions that start with "where"
Questions that start with "when"
Questions that start with "why"
100
What color is a rose?
Red, yellow, pink, white
100
Who brings the mail?
the mailman
100
Where do you cook?
kitchen
100
When is Halloween?
October 31st
100
Why do we sleep?
because we are tired, sleepy, or need energy
200
What color is your shirt?
Let's check!
200
Who is this?
Elmo
200
Where are they?
movie theater, cinema
200
When do you eat lunch?
in the afternoon
noon (or a specific time)
200
why do you eat food?
hungry, starving
300
What do you wear to bed?
pajamas
300
Who is this?
Michael Jackson
300
Where do you get your teeth cleaned?
The dentist
300
When do you get presents from Santa Claus?
Christmas, Christmas Eve
300
Why do you walk the dog?
to exercise it, let it potty, enjoy the air, go outside
400
What animal says, "moo"?
cow
400
Who is the orange?
Tigger
400
Where can you find a book?
library, bookstore
400
When done you wear sunglasses?
when it is sunny
400
Why do you go on vacation?
to take a break
500
what's this?
snowflake
500
Who is the man in the red suit who brings Christmas presents?
Santa Clause 
500
Where can you build a snowman?
in the snow, mountains
500
When do you do the dishes?
when the dishes are the dirty
500
Why do plants need water?
to grow