Because the next episode will be aired after the people knows the winners, the 3 question marks must be the 3 winners? There no other reason to hide their faces if they were just showing all the finalists around... I understand they hide the faces because it's a preview, but also because they must be the winners.
nah, just like the MM 9th gen audition, the girls still wore their jumpsuits up to a similar point like next week's episode. there is no guarantee that they'll pass (Aina, Mogi were at this stage)