The cats chased the mice. (subject)
They
These
This
Them
The cats chased the mice. (object)
These
They
This
Them
Benny ate cheese pizza. (subject)
It
He
She
Me
Benny ate cheese pizza. (object)
them
him
it
her
Charles and Fred ran on the playground. (subject)
They
These
He
We
Charles and Fred ran on the playground. (object)
this
that
there
they
Mrs. Smith wrote a letter. (subject)
He
They
She
You
Mrs. Smith wrote a letter. (object)
them
it
her
us
Aunt Lily gave Eric a present. (subject)
It
She
I
Her
Aunt Lily gave Eric a present. (object)
his
he
us
him
Veronica saw her friends yesterday. (subject)
She
Them
We
They
Veronica saw her friends yesterday. (object)
us
she
they
them
Joe and Harold found Mimi and me. (subject)
He and He
We
They
You
Joe and Harold found Mimi and me. (object)
us
they
our
we
Hanna looked after Sarah. (subject)
I
They
She
Her
Hanna looked after Sarah. (object)
hers
she
her
he
