Like Alex, it was impossible to guess what was going on in his mind by the expression on his face.
Hey, you'll never guess what happened tonight.
I'm trying to guess what he might do; put myself in his boots.
She rose and trailed him from the house to the car, unable to guess what could agitate him if killing people didn't.
He could guess what Dusty was pissed about, and it didn't have anything to do with women or rearranging his sectors.