Sentence examples for on a book from inspiring English sources

Currently working on a book about resilience.

I am working on a book proposal.

They are now collaborating on a book.

He has been on a book tour.

I'm working on a book.

I understand you're working on a book.

He never went on a book tour.

I've been on a book tour lately.

"I was on a book tour.

But I am on a book tour".

Maybe put on a book-related background.