He was trying hard to keep the smile off his face.
I have no idea how she kept a smile off her face.
Now the American could not keep the smile off his face.
Quite obviously, they hadn't been able to get all the blood off his face.
She saw me suddenly and the smile went off her face.
I looked at him and couldn't keep the surprise off my face.
It was as if I had dropped off the face of the earth.
Now it's impossible for me to take my eyes off her face.
He backed away, never taking his eyes off my face.
He wanted to shoot the look off the black man's face.