She looked at him with an uncertain expression.

Aaron Cook rose from the table, an uncertain expression on his face.

Confronted by uncertain expressions, he nodded and qualified his statement.

She stared at the doorway with an uncertain expression.

The glowing moon-colored face suddenly took on an uncertain expression.

His uncertain expression vanished at the first bite and he tucked in with relish.

He looked at her, a puzzled, uncertain expression on his face.

She was looking at the roll of bills, an uncertain expression on her face.

She turned toward the headlights, and I could see the dazed, uncertain expression on her face.

The Duke watched the angry, uncertain expression with an enigmatic smile.