Essential Grammar in Use. Supplementary Exercises. To Accompany Essential Grammar in Use Fourth Edition. Essential Grammar in Use. Supplementary Exercises, сопровождающее четвертое издание Essential Grammar in Use, предоставляет учащимся уровня Elementary дополнительные упражнения по грамматике, описанной в основной книге. Благодаря простым упражнениям и полным ответам эта дополнительная книга идеально подходит для самостоятельного изучения. 3-е издание. Grammar in Use is the world's best-selling grammar series for learners of English. To accompany Essential Grammar in Use Fourth edition, Essential Grammar in Use Supplementary Exercises provides elementary-level learners with extra practice of the grammar covered in the main book. The easy-to-follow exercises and full answer key make this supplementary book ideal for independent study. Extra activities for Essential Grammar in Use are also available as a mobile app for smartphones and tablet devices, available to purchase separately from the App Store (iOS) and (Android).