The pen is on the desk.

On my desk, perhaps?

Your book is on the desk.

Your book is on the desk.

Put it back on the desk.

There is food on the desk.

Leave a nickel on the desk.

There is medicine on the desk

The watch on the desk is mine.

It's on the wall, behind the desk.

Yes, sir. On your desk.

Put this on my desk.

Yes. It's on my desk.

I see a book on the desk.

There is a book on the desk.

There is a map on the desk.

There are some books on the desk.

I see a flower on the desk.

There is an apple on the desk.

There is one apple on the desk.

There is a bag on the desk.

Look at that picture on the desk.

Whose book is this on the desk?

You don't know what's on the desk.

He put down the pencil on the desk.

The timetable is over there on the desk.

Don't put it on my desk.

Your bag is on my desk.

There's a book on my desk.

I put them on your desk.

I did. It's on your desk.

Right on your desk. Match it.

I found this on my desk.

There is only one book on the desk.

I mean, there's no paper on the desk.

There's a book about dancing on the desk.

The telephone on my desk rang persistently and loudly.

Many pictures are placed on Xiaoding's desk.

But he stopped next to my desk, and he tapped on my desk, and he said, Nice cat.

Was there a book on the desk a moment ago?

Give me the keys, then. They're on your desk there.

My glasses. I'm sure I left them on the desk.

Too much stuff piling up on my desk.

You may leave your keys on my desk.

In the desk!