heaven knows what my immigrant grandparents made of the book, if they read it at all.
Hurtling through the sky on the way to heaven knows where is an altogether new hazard.
“heaven knows when he fitted it all in,” says Professor Beard.
heaven knows, Wilson, when and where shall be our next meeting.
heaven knows how anxiously I sought to fulfil that solemn vow!
I suspect I was when I was perplexed, and heaven knows that very often my perplexity was extreme.
I wrote an apology to Mr. Montenero, and heaven knows how much it cost me.
heaven knows when I'll see another swell audience mobbing one of my attractions!
He's a schoolmaster and a barrister and a poet and heaven knows what not.
Germaine, heaven knows, if I could do anything for you, I would!