Grammar question

[Garyshatrick]

Is "Thank you" a complete sentence with the "I" implied? Is the sentence subject ever implied except in an imperative sentence

[2006]

Is "Thank you" a complete sentence with the "I" implied? I would say so.
Is the sentence subject ever implied except in an imperative sentence? Certainly in oral English it often is.
Makes no difference to me. Don't know.

2006