Answer:
I asked Sam nicely if he could give me the book he borrowed last week, but he refused.
Explanation:
The first one is incorrect because Sam did in fact borrow the book, not "supposedly."
The third one is incorrect because no one says "shined me on".
The fourth one is incorrect because in proper English we don't use "really super cool".
answer:
the second one
why:
all the other ones contain some slang or things that don't make sense for the sentence