She looked up at him, her brow furrowed in a frown.

He looked down at me then, brow furrowed with trouble.

After a moment, she glanced away, brow still furrowed with secret concerns.

She shook her head, brow furrowed as if in confusion.

Then he entered the supply store, his brow furrowed in thought.

His brow furrowed as something suddenly seemed a little off.

His brow furrowed as he paused, then quickly turned and stared out the window.

Charles's brow furrowed in thought for a moment, then cleared.

He pondered this for a moment, brow furrowed in thought.

He made a gesture, stood up, brow furrowed in thought.