He sat in the dark for a long while, his mouth hanging open.

She was watching him now, with her mouth hanging open.

He had large feet and his mouth always hung open.

The world's last hope only stood there with his mouth hanging open.

He had a small feeling that his mouth was hanging open.

The chief's mouth hung open as the last sound left it.

Her mouth hung open when she saw us sitting at the kitchen table.

His mouth hung open for a moment before he spoke.

After a moment I realized my mouth was hanging open.

She stared at me for a moment, her mouth hanging open.