I bought this book; however, I didn`t like it so much. This is only one book from a series including accounting, management, and many other subjects. I think this book is very superficial not only for that reason I mentioned but for the subjects it recovers. In fact, this book covers only some patterns for writing and speaking thats all. I don`t know how that guy got 100 at the Toefl exam but this book just discuss a bit in speaking and writing. You can find many of this information in any grammar books.

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