Is that a pencil sharpener?
No, it isn't. It's a door.
What are these?
They are clocks.
Is this a pencil sharpener?
Yes, it is. It's a pencil sharpener.
Is this a calendar?
No, it isn't. It's a workbook.
Are those workbooks?
No, they aren't. They're pictures.
What are these?
They're paper clips.
Is this a picture?
Yes, it is. It's a picture.
What's that?
It's a window.
What are those?
They are windows.
What are those?
They're doors.
What's that?
It's a clock.
Are these windows?
No, they aren't. They're pencil sharpeners.
Are these calendars?
Yes, they are. They're calendars.
What's this?
It's a paper clip.
What's this?
It's a calendar.