Aware of the other being's presence more than he liked to admit, Draco tried to refrain from letting his emotions and feelings show. He was still terrified, but less so than before. He still wasn't about to let this complete stranger see how scared he was.
"Why would you sleep for a hundred years?" Yes, Draco was one to be right to the point when he wanted to be. He had really no interest in trying to play so nice, but trying to get information was still his main goal. He wasn't necessarily a polite one, but usually he had others to cover for him being impolite.
He was curious. He wasn't about to hide his own curiosity, either.