What's that?
It's a pencil sharpener.
What's this?
It's a window.
What's this?
It's a clock.
What are these?
They're windows.
What are these?
They're doors.
What are these?
They're clocks.
What are those?
They're workbooks.
What are those?
They're pictures.
What's this?
It's a door.
What's that?
It's a paper clip.
What's that?
It's a picture.
What's that?
It's a workbook.
What are those?
They're pencil sharpeners.
What are those?
They're paper clips.
What's this?
It's a calendar.
What are these?
They're calendars.