There, behind a very large desk, sat a disagreeable-looking old woman with a sour expression.

And everyone turns "to see Henry James sitting there with a very studied expression on his face."

He was sitting perfectly still, full of tension, with a strange expression on his face.

The chief chemist sat with an irritated expression on his face.

He sat with his hands folded and a completely impassive expression.

Carol yells at Reno for sitting with a blank expression.

He sat back down on the sofa with a bored expression on his face.

When he had finished speaking she sat for a long while with a rapturous expression on her lovely face.

North had been sitting with his mouth open and an expression of outraged alarm.

She was sitting tensely in the dentist's waiting room, with a worried expression on her face.