on his/her desk
The DVD is on his desk.
Ha messo i piedi sulla sua scrivania.
He put his feet up on his desk.
Tom ha messo il suo cellulare sulla sua scrivania.
Tom put his cell phone on his desk.
Disse che era sulla sua scrivania.
He said it was on his desk.
Mise i piedi sulla sua scrivania.
He put his feet up on his desk.
La bottiglia è sulla sua scrivania.
The bottle is on his desk.