I'm sure; I'm right
Am I right?
Se ficar no seu quarto, verá que estou certa.
If you stay in your room, you'll see that I'm right.
— Durante a Tormenta (2018)
Me desculpe, estou certa para ir para CEAM?
Excuse me, am I on the right way to CEAM?
— O Sol Enganador (1994)
I'm sure my sentence is correct.