Here are some examples of how you might use "kay" in a sentence:
* "Kay, I'll be there in a few minutes." (This is a casual way of saying "Okay, I'll be there in a few minutes.")
* "She said 'kay' and hung up the phone." (This is a way to show the informal speech of a character.)
If you're looking for a sentence with a different word, please provide it, and I'd be happy to help!