should know
Algo que deve saber sobre mim é que quando estou bravo, fico quieto.
Something you should know about me is that when I'm angry, I become quiet.
Someone must know.
Deve saber tudo sobre Hogwarts.
You should know everything about Hogwarts.
— Harry Potter e a Pedra Filosofal (2001)
Don Patricio, que acompanha a contagem, deve saber.
Don Patricio, who is following the count, must know.
— No (2012)