Who is it?
you (singular)
Who is it?
I
Who is it?
she
Who is it?
she
Who is it?
you (plural)
Who is it?
they
Who is it?
we
Who is it?
I
Who is it?
it
Who is it?
he
Who is it?
he
Who is it?
you (singular)
Who is it?
it
Who is it?
they
Who is it?
you (plural)
Who is it?
we