He noted the peculiar expression on her face and wondered about it.

They noted the expression on his face and said nothing.

When someone noted the smile on his face, he said, "We got tired of walking around with our heads down, feeling sorry for everybody."

At this, he noted an expression of dismay on the American's face.

He noted the look of worry on her face.

She noted the expression on Rose's face, and her smile faded.

You will also note the smile on his face.

Frank thought, noting a look of surprise on the smuggler's face.

She noted the surprise on his face as he found it fit perfectly.

He stared at the physician and noted a peculiar expression on the man's face.