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The boy was sitting at his father's desk, before the computer.

When she got back he was still sitting at his desk.

I sat at my desk for a while, trying to figure out what to do.

She sat at her desk for a long time without doing much of anything.

After the difficult phone call, I just sat at my desk.

I turned around and sat back down at my desk.

They were sitting across from each other at his desk.

A girl he did not remember sat at the desk.

I'd been sitting at the desk for more than five hours.

Back in my room, I sat at the desk and considered.