Is this a CD-ROM?
Yes, this is.
Are these CDs?
Yes, they are.
Is this a computer?
Yes, it is.
What is it?
It's a printer.
Are these pens?
No, they aren't. They're pencils.
Is this a keyboard?
Yes, this is.
Are these books?
Yes, they are.
Are these pencils?
No, they aren't. They're pens.
What is it?
It's a bookshelf
Is it a cell phone?
Yes, it is.
Is this a cell phone?
No, this isn't. This is a mouse.
What is it?
It's a monitor.
What's this?
This is a desk.
What's this?
This is a computer.
Is this a mouse?
No, this isn't. This is a mousepad.
What's this?
This is a pen.