"¿Qué tienen que comprar para la fiesta?"
Translation:What do you need to buy for the party?
Needs to be "need to". Have to...need to...god bless our cult of American "over size everything". Snort.
I thought thats what they would ask for, otherwise we would have had to use "necessitar" right
Tienen... is third person plural (They Have) not first person singular (Tengo). So, what's up Duo?
I'm assuming Duo intends for us to use plural you - 'ustedes tienen' - in this case. But obviously 'they' works as well.
My translation: What have they to buy for the party?, is not accepted, just don't understand why, they suggest I add the word got: what have they got to buy...Tener que means have to???