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.