Definitely "thank god I'm free at last", though possibly some of my ex-pupils might disagree. I used to do crazy things on occasion to make stuff memorable - standing on a table over the "corpse" of a twelve-year-old Julius Caesar to do Mark Antony's big speech, for example.

I have never been convinced about the value of formal grammar lessons, myself. The terminology can be useful to help one recognise a mistake, but no diagramming ever helped anyone write a better sentence, IMO.