"A szakácsoknak van egy nagy konyhájuk". big = large Why not have a large kitchen instead of a big kitchen? Another BLEEP for something that should be accepted.
When stuff like that happens to me, I just glare at my monitor and say "not my BLEEP Duolingo, that one's yours!"
Thus far I have yet to see "Szakács" translated as "Chef" in this Duolingo course, Cook and chef are interchangeable in English, and Chefs I'd imagine would be the preferred choice here, but I dare not try for fear of the dreaded bleep.
I still think that chefs are the bosses of the rest of the cooks. The alpha cooks. In Hungarian főszakács, "head-cook".
Cooks and chefs are not interchangeable. A "chef" is someone usually with a recognized qualification in charge of a kitchen with staff. Not all cooks are chefs.
Because that one sounds really strange. With "have", the usual way is the simple present, with a few exceptions.
I agree with vvsey. It works better in a different context : The cooks are having a conversation.