"Il cuoco beve le sue birre."

Translation: The cook drinks his beers.

[eltapatio]

if il cuoco is male
la cuoca would be female? like in Spanish?

[f.formica]

Yep, although it doesn't work for all names, as some don't change with gender.

[DamienLiu]

It seems to me that 'sue' can also be the possessive adjective for formal you (2nd personal singular), but they don't accept my answer here.

[Pablo-Enzo]

Only when the S in Sue is capitalized. Lowercase sue is third person possesive adjective.

[CallMeAnja]

sounds like German

[Elena18]

I instinctively translated this as "the cook is drinking his beer" w/out really thinking (b/c it's a much more normal-sounding sentence)- and surprisingly, the system counted it as correct. Now I'm wondering WHY...?

[Pablo-Enzo]

Beer can work as an uncountable or mass noun, just like a head has hair, a river has water and a book contains information.

[u6c00]

I got marked correct with "the cook drinks his beer" which I think should have been wrong.

[Pablo-Enzo]

Beer can work as an uncountable or mass noun, just like a head has hair, a river has water and a book contains information.

[u6c00]

is the possessor of the beers, the same person as the cook in this context? For example I could say "my brother ties his shoelaces" or I could be indicating to my brother and say "my mother ties his shoelaces"

[Pablo-Enzo]

It depends on the context, you can't tell only from this phrase. He could be drinking his own beer, or a third person's beer, either male or female.