Companion Book

In language, we have to write a companion book to this book called All of the Above.  I think its kind of dumb because it has to be eight chapters, and it has to be at least 24 pages long.  Actually, I am okay with having to write that much, I just don't like how it has to be a companion book.  If we got to write our own book, that would be fine but instead we have to write a book about a book?  That's just weird.  So I am basically just trying to fill in random words to make it three pages for each chapter.  It's hard and annoying, but I have gotten better at writing.