Question marks and exclamation marks go at the end of a sentence and they tell us what type of sentence it is. Using different sentence types helps makes your writing more interesting. In Jackie ...

Because sometimes, periods, commas, colons, semi-colons, dashes, hyphens, apostrophes, question marks, exclamation points, ...

In the eighth century, English scholar Alcuin of York introduced the question mark to signal uncertainty. In the 14th century, Florentine leader Coluccio Salutati introduced the exclamation mark ...

Question marks (?) and exclamation marks (!) are punctuation marks that go at the end of a sentence. This technique should be familiar to you as you will have studied it at 3rd level.