In the lesson it states:
"When last time is followed by a clause (last time I saw you), you can only use la dernière fois, and never la fois dernière."
but there is a question that asks "_______, Henri est venu me voir." ("Last time, Henri came to see me") One would assume the answer would be "La dernière fois," but that was not listed as an option for multiple choice.
Instead, it says that the answer is "La fois dernière" (the other multiple choice answers are: Dernière fois/ Fois dernière/ Une dernière fois). Is this because there is a comma, so "Henri came to see me" does not count as a clause following "Last time,"?