- Exercises The book has two broad indexes, one initial and one alphabetical content of concepts, in the end. On the other hand, a small key and tutorial proposes (in separate volume) to the key exercises. - This book contains exercises that correspond to the topics of grammar intensive course series. It consists of 56 units divided into two cycles. Each has the same structure: the first exercises in each unit are the backbone of it and focus specifically on morphological problems of the verb in the first cycle and morphosyntactic in the second. Next, the unit concludes with one or two vocabulary exercises