II rewrite the following sentence in the plural from 

1 what's this ? - it's a stereo 

what are these? -> They are stereos

2 what's that ? - it's an armchair =>

What are those? They are armchairs

3 who's he ? -he's a teacher=>

Who are they? They are teachers 

4 i'm a student =>

We are students
5 is this your pencil ? yes , it is =>

Are these your pencils? Yes, they are

6 is that her schoolbag ? yes , it is=>

Are those her schoolbag? Yes, they are

7 there is a school in my city =>

there are some schools in my city 

8 that is my bookshelf =>

Those are my bookshelfs