Hello! I sneaked into the pages of this book – uninvited, of course – because I love crosswords and quizzes, with the condition that there are no... cats in them.

The exercises were created by Leonidas, Margarita, Vaggelis, and Angela, the quadruplets of Mr. Giannis and Mrs. Nelli, who just finished the 4th grade.

Now, how all of this fit into one book is a story you'll learn by flipping through it.