Answer:
I believe that this expression would be classified as hyperbole.
Explanation:
It is a hyperbole because it's a stretch from the truth, they (being "we") didn't actually walk a hundred miles.
Answer:
I think the answer is subordinating conjunction
Explanation:
It means that we must always stay in the middle of opinions and never move completely to one side. (ps. I am so sorry but I might be wrong).