Question

Is this/these your exercise book?
No,it isn't.That is/These are my exercise book.It is green.
This is/These are my pens,that is/those are her pens.
This/These aren't your pencils.They are my pencils.
Are this /these your CDs?
No.Those/That are my CDs in that/those bag.

Answer 1

1. this
2. That is
3. These are
4. those are
5. This
6. Those
7. that