She would look at him and not open her mouth.

I open my mouth to say something but no sound comes out.

I'd open my mouth to say something, and nothing would come out.

Why did you open your mouth in the first place?

Sometimes you just couldn't open your mouth with those two.

And all because he had to open his big mouth.

Only once did he open his mouth to say something.

God, why did she have to go and open her big mouth?

Yet when he opened his mouth, the words would not come.

I opened my mouth to answer, but he cut me off.