looking for help with apostrohe catastrophe in the following

Question

it is, use_________. if not,use_______
there is, use______. if not,use_______
who is, use________. if not, use______
they are, use______. if not, ____ or __
you are, use_______. if not, use_______
let us, use________. if not, use_______
we are, use________. if not, use_______

Thanks

Answer 1

I don't understand your second column.

it's
there's
who's
they're
you're
let's
we're

Answer 2

second column

its
theirs
whose
...

Do you "get" the rest, abby?

Answer 3

Ahh -- Thanks, Writeacher.

Answer 4

Thank you Ms. Sue and Writeacher.