"The friends are eating the cookies."
Translation:Οι φίλοι τρώνε τα μπισκότα.
In formal written Greek, you should not use Latin script. On the internet (which is informal), if you search some cookies recipes you will find either cookies or κούκις. This happens with very small part of loanwords, though. One would never say "Το computer μου¨" αλλά "Το κομπιούτερ μου" etc.