He opened his mouth as if to speak, and then firmly closed it again.

He opened his mouth as if to speak, but the boy's voice cut him off.

He opened his mouth as though to speak but, thinking better of it, turned and left the room.

After all, the merchant had stood up and opened his mouth as if to speak.

Data stood, and opened his mouth as if to speak.

Brown shook hands, opened his mouth as if to speak again, didn't, and went away.

She opened her mouth as if to speak, but no sound came.

He opened his mouth as if to speak, but no words came.

For one moment he opened his lips as though to speak, but no word came.

Joan looked at him, opened her lips as if to speak, and closed them again.