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The book was mildy helpful, the exercises at par with it's peers, but the worst part for me was that a few of the pages were missing! Pages 34, 35, 38, 39 and 42 were just blank pages which were evidently supposed to contain important tips, passages, questions and answers, and this made it impossible to complete all the exercises. All in all, a 1/5, as this workbook did not even come close to meeting the high expectations I held for it.