At the end of each lesson, exercises are provided that the learner will find sufficient mastery of these 504 essential words by solving these exercises. Therefore, language learners understand the different meanings of the word in the form of three sentences well. This book contains 42 lessons, in each lesson 12 words are taught in the form of three key sentences. The book 504 absolutely essential words is one of the main and most important resources for teaching English vocabulary, which is used by almost every language learner who intends to participate in one of the language tests or who intends to increase his vocabulary.
