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Review title: Vague Answers
Product review: I have just taken my GMAT and started to prepare for Toefl. However, this book's reading part is not like real TOEFL offical guide. It is unnecassary hard and the answers look like each other. They are vague. The content of reading passages are extremely hard. I believe Official guide is best. Longman is too easy and this book is too hard.
