The boy closed his mouth and sat next to the window.

He started to say something, then closed his mouth and gave me a look of thanks.

So I have to find something else to close your mouth.

It had never felt so good to close his mouth.

He closed his mouth then and looked at me, waiting to see what else I might ask.

But no sound came out, and after a moment he closed his mouth again.

He closed his mouth in time, before the words came out.

But then he closed his mouth and said no more.

He started to speak, then closed his mouth, and thought instead.

After a moment I even managed to close my mouth.