His face worked in a peculiar way which I tried not to notice.

His face worked; he was trying to make sense of it.

His face worked as though to speak, but there was an invisible wall between them.

"They're looking for the girl," the senator said, his face working.

His face was working furiously, while he tried to think of what to say.

The man's face suddenly worked as if someone the boy couldn't see had punched him.

Then I saw that his face was working the worst ever.

I tried to return it, but my face was not working properly.

I tried to smile at him, but my face wasn't working right.

His face and lips worked, but he could say nothing.