<span>They argue with each other.
Oberon and Titania have been in a fight since Titania made it clear she would not give Oberon the changeling boy to be his servant. Now, every time they cross each other's paths they fight and argue publicly, so all of the fairies are afraid of being around when that happens.</span>
Bilingualism is knowing more then 1 language
C. To present the topic and point of view of the book.
A is done within the book, B is done at the back of the book, and D is usually the author's note.
D. Because it applies that it would be lame to be the only one left. So you should follow your friends.