Sentence examples for which i did from inspiring English sources

"which I did" is a grammatically correct and usable phrase in written English
You can use it to refer to a specific action or event that you have mentioned previously in the sentence or in the context of the conversation or text. Example: "I was hesitant to accept the job offer, but my friends convinced me to give it a try, which I did. And I'm so glad I took their advice because I'm now loving my new job."