If hos also means with, then why is we eat with you wrong
because 'hos jer' is 'your place' rather than 'with you'. It's expressing the location, not the companions.
Duolingo needs to have this phrase in the drop-down list
I had read the comments. Now it makes sense why I got it wrong.
This is the best way to learn ;)
What means hos
It's like chez in French.
As well as "bei" in German: Wir essen bei euch.
Nous mangeons chez vous.