Breakdown of Gardez ces documents sur votre bureau.
sur
on
ce
this (before a noun)
le bureau
the office / the desk
votre
your (formal/plural) (singular and plural forms: votre, vos)
Questions & Answers about Gardez ces documents sur votre bureau.
Why is there no word for 'you' before gardez?
Because this is a command (the imperative mood). Just like in English, you drop the subject pronoun when giving an order or instruction. You say gardez (keep) instead of vous gardez (you keep).
How do we know this command is for the vous form?
Why do we use ces here instead of ce?
If we are using the vous form, why is it votre bureau and not vos bureaux?
The possessive word must match the thing being owned, not just the owner. Even though the owner is vous, the word bureau (desk) is singular. So, we use the singular votre (your). If there were multiple desks, we would use the plural vos.