I would have to know for certain that she felt the same way.
We wouldn't know for certain until the actual exchange.
Thing to remember is that they'll pay to know for certain.
But I know for certain that we were in the right spot.
So... I know for certain there's no feelings between us.
And there's one thing I know for certain.
Because I know for certain what has happened to the human race.
Wiem na pewno, co się stało z ludzkością.
One of the things we know for certain is that the killer showered.
The only thing I know for certain is they let him go.
Jedno wiem na pewno - wypuścili go.
Because now I know for certain there is more out there.
Bo teraz wiem na pewno, że tam jest coś więcej.
All I know for certain is that the pain is real.
Wiem na pewno tylko to, że ból jest prawdziwy.
There is a clear way to know for certain but I hesitate to suggest it.
Istnieje prosta droga żeby wiedzieć na pewno ale nie chcę ci tego sugerować.
We don't know for certain what happens when we die.