Puffin Young Readers 155x230 48 страниц. 2013 год. Puffin Every year millions of butterflies travel over 2,000 miles to the same area in Mexico. Why do they do it? How do they do it? Read this book to find out. Transitional Reader. Level 3: - Multisyllable and compound words; - More dialogue; - Different points of view; - More complex storylines and characters; - Greater range of genres.