What's this ?
It's a book.
Is it an eraser ? No, it _________.
isn't
Is it a sharpener ? Yes, it ____.
is
Is it a ruler ?
No, it isn't. It´s an egg.
Is it an _________ ? Yes, it is.
ostrich
Is it a book ?
Yes, it is. / No it isn't.
It's _____ backpack.
a
What's this ?
It's glue.
Is it a table ?
No, it isn't. It's a window.
It is _____ alligator.
an