How to use "speechless" in a sentence

Cosette said nothing, speechless with fear as the woman raised her arm to hit her

When Javert stared at him, speechless with surprise, Valjean went on, I don't suppose I'll leave here alive

'I don't understand,' Marius said, almost speechless with amazement.

Thenardier stared at the coat and the cloth in his hands, speechless with fear

Both men looked up, speechless with amazement.