So he opened his mouth and then closed it again without speaking.

I opened my mouth to say no, but closed it again without speaking.

He opened his mouth to ask another question and closed it without speaking.

Again Beatrice opened her lips as though to speak, but closed them without speaking.

She opened her mouth to defend herself, but then just closed it again without speaking.

Nick Lopez opened his mouth, and closed it again without speaking.

She was taken aback, opened her mouth and closed it without speaking.

The Consul turned, opened his mouth, and closed it without speaking.

She opened her mouth a couple of times, but closed it without speaking.

He opened his mouth to reply, but closed it without speaking.