o que vão fazer

what are they going to do

→ o
phrase Rare #26,662
what are they going to do Used to ask what a group of people will do or intends to do. The subject is usually understood from context.
PO: Você sabe o que vão fazer depois do jantar?
EN: Do you know what they are going to do after dinner?

O que vão fazer?

What are you going to do?

— Relatos Selvagens (2014)

O que vão fazer hoje?

What are you going to do today?

— A Grande Beleza (2013)

O que vão fazer agora?

What are they going to do now?

— Victoria (2015)

Tom e Mary já sabem o que vão fazer.

Tom and Mary already know what they're going to do.

O que vão fazer sozinhas na Califórnia?

What are they going to do alone in California?

— A Empregada (2025)

Se te encontram, sabe o que vão fazer?

If they find you, do you know what they're going to do?

— Замри-умри-воскресни! (1990)

O que vão fazer com ele?

What are they going to do with him?

— Os Incompreendidos (1959)

O que vão fazer, despedir você?

What are they going to do, fire you?

— Um Dia de Fúria (1993)

Tom e Mary não sabem o que vão fazer.

Tom and Mary don't know what they're going to do.

O que vão fazer esta noite?

What are they going to do tonight?

— Oh Boy (2012)