Essential Grammar in Use with Answers and Interactive eBook: A Self-Study Reference and Practice Book for Elementary Learners of ◆商品名:Essential Grammar in Use with Answers and Interactive e Book: A Self-Study Reference and Practice Book for Elementary Learners of Grammar in Use is the world's best-selling grammar series for learners of English. Essential Grammar in Use Fourth edition is a self-study reference and practice book for elementary-level learners (A1-B1), used by millions of people around the world. With clear examples and easy-to-follow exercises, it is perfect for independent study, covering all th