What questions refer to....
people (objects of the action)
things
What is the WH word for this sign?
When
Why questions refer to....
animals and objects
reasons
When questions refer to....
time
things
Who questions refer to...
People (Subject)
Places
What is the WH word for this sign?
Which
Whom questions refer to...
animals and objects
people (objects of the action)
What is the WH word for this sign?
Why
What is the WH word for this sign?
What
Which questions refer to
animals and objects
people, things, and animals
What is the WH word for this sign?
That
What is the WH word for this sign?
Who
Where questions refer to...
places
time
What is the WH word for this sign?
Where
That questions refer to..
people (subject)
people, things, and animals
What is the WH word for this sign?
That