Oxford Bookworms Library: Stage 4: Bestseller Pack by Jennifer Bassett
Oxford Bookworms enjoy a world-wide reputation for high-quality storytelling and a great reading experience. Research shows reading a lot improves all your language skills. Experts recognize Oxford Bookworms as the most consistent series in terms of language control, length, and quality of story - very important for fluent reading and extensive reading. There's a wide choice of titles too - something for everyone.