Instruct: Classify Amazon reviews into positive or negative sentiment
Query: the most organized and useful IELTS text book

I bought four books for IELTS preparation. This book is the best book for my preparation. Some books includ too many activities that not really related to IELTS questions. and disorganized. However, this book very organized, practical, and makes me feel confident for these questions. If you intend to get familiar with the questions, not study general English, this book will give you great tips for your study performance.