"I was striking the wrong end of the match," she said, her expression blank.

It had been all he could do to keep his expression blank.

With great difficulty, Paris tried to keep his expression blank and even.

She stared at him, her expression blank, like a robot's.

For answer, she looked at me, her expression blank.

I tried to keep my expression blank, but it was not easy.

Jim didn't respond, staring down at the floor, his expression blank.

He stared at me for a moment, his expression blank.

His expression blank, he stared at her for long moments.

The dark man smiles at her, then wipes his expression blank.