He was no more capable of altering his expression than a statue.

Then she altered her expression to one of earnest attention as Sarrai looked over at them for whispering.

Unconsciously, he tried to alter his expression, and the attorney's face moved, following the change.

"That's impossible," he whispered, without altering his public expression.

It didn't alter her dour expression any, though; some people just can't take a joke.

Bellows looked at each student, including Susan, who returned his gaze without altering her neutral expression.

She had not troubled to alter her expression.

"I may be allowed, I hope, to alter my expression without asking your permission."

He avoided making any comment or altering his expression.

Hawk- moon's face hardly altered its expression while all this went on.