Die sind Tassen?
Duolingo asked me to translate "Those are cups." but when I typed "Das sind Tassen." it tells me that's wrong and it should be "Die sind Tassen." I don't understand how that works, I thought maybe 'that/these' changes from das to die if it's plural, but I got the phrase "Das sind die letzten zwei Orangen." which is plural but uses das.