One hand flew to her mouth as if she'd not expected anyone.
Data's hands flew over his board as he sent the message.
The man's hands were flying as he leaned over the bed.
Then he fell and the hands flew forward to save him.
The young man's hands flew up to his face, as if he'd just remembered something important.
She went still, and a hand flew to her ear.
His hand once again flew toward the vision on the screen.
Her hands flew over the board, trying to make adjustments.
But even as his hands flew over the controls, he continued.
For this class, it was an easy question, and eager hands flew up.