The answer is definitely: "And so it piled up to the ceilings" since the author is using exaggeration as a literary technique to make the situation seem even worse than it is.
I hope this answer helps you :)!
<span> A. The dwarfs think that Bilbo has done harm to their friend, Gandalf. B. Bilbo thinks that the dwarfs have taken him from his family. C. The dwarfs don't think that Bilbo can help them on their mission/quest. D. Bilbo wants the dwarfs to bring him back to his place (or you know, his home), but they don't want to. :)</span>
to contrast the concern the boys should have felt with the satisfaction they really felt.. It can be seen the boys ere very happy when the cubs boat blew up and when the cub appeared in church and was treated as a hero.