3 examples of know-alls in sentences

" The Corporal began to expostulate, but the Sergeant adopted the none-of-that-I-know-all-about-your-sort attitude which is so admirable in these officials.

"Don't be Nelly Know-all," I remember his saying once.

So do I, of course; and I listen with great interest as Miss Winifred Jenkins commences her performance, which she does without blush or hesitation, and with quite an I-know-all-about-it sort of air.

3 examples of  know-alls  in sentences