What language did you speak using the verb in past tense?

As a large language model, I don't speak any language in the way humans do. I don't have a physical body or a personal history, so I haven't spoken in the past. I can process and generate text in many languages, but that's different from speaking.

If you're asking about which language I used to produce a specific piece of text, you can tell me the text and I can tell you which language it was generated in.

For example, if you say: "What language did you use to say 'hello'?" I can tell you that I used English.