Summer of elementary school (new edition)

Rejoice! I dug into the pages of this book – uninvited, of course – because I like crossword puzzles and quizzes, but on the condition that they do not contain cats. The exercises were performed by Leonidas, Margarita, Vangelis and Angela, the quadruplets of Mr. Giannis and Mrs. Nellis, who finished the 4th grade. Now, how it all fits into a book is a story you will learn by flipping through it.