This document appears to be the contents page and introduction for an upper-intermediate English workbook. It provides an overview of the units and exercises covered in the book. The units cover a range of topics for developing language skills like discussing photos, presenting arguments, and talking about past experiences. Exercises are included for various tenses, vocabulary, functions, grammar and skills like writing, speaking, reading and listening. Review sections and a functions bank, writing bank and grammar reference are also included at the end. The contents suggest this workbook is intended to help learners strengthen their English abilities at an upper-intermediate level.