Must have sneaked in the door behind me while I was working at my desk.

What's the best place for you to work, at your desk or the kitchen table?

He refused, still working at his desk and as she withdrew her head the phone rang.

I'd been working at his desk for a week and hadn't seen any key that I remembered.

In the first room, a teacher was awake and working at his desk.

I used to play with it here while mother worked at her desk.

Debra was working at her desk when she heard the wind coming.

The Doctor, too, had discreetly left to work at his desk.

I am working hard every day at my desk.

Half an hour later she returned to find him working at his desk.