He went through with it like the solid citizen he was: admitted the evils of tobacco, courageously made resolves, laid out plans to check the vice, tapered off his allowance of cigars, and expounded the pleasures of virtuousness to every one he met.
There are no more uses of "expound" in the book.
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You will be asked to expound on a teacher-selected topic from the book.
The Federal Reserve Chairman will expound on the inflation outlook.