He seemed to speak with difficulty and once the nurse interrupted to take his pulse.

Harold only interrupted once, and that was when he realized who the villain of the piece was.

His lordship did not once interrupt him with question or remark.

To his credit, Greg didn't once interrupt me.

The two flag officers were a perfect audience, not interrupting once, only darting a few disbelieving looks at him.

Thad interrupted once or twice near the start, then settled back, content to listen.

He interrupted once to ask why they'd gone to jai alai.

The Duke did not once interrupt as John told his story.

A student once interrupted him and said, "I just don't understand."