He .....taking an exam.
isn't
He .....writing on the board.
is
Kim ....putting books in a locker.
is
Kim ....putting shoes in a locker.
isn't
Paul ....going to school.
is
Paul ... swimming.
isn't
You ..... tying your shoelaces.
are
You ..... putting on a hat.
aren't
The girls ..... changing.
are
The girls ..... sharpening their pencils.
aren't
The kids ..... having lunch.
are
The kids ..... taking an exam.
aren't
The teacher ..... writing on the board.
isn't
The teacher ..... marking.
is
She ..... taking notes.
isn't
She ..... taking the register.
is
