Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Q: This video is fine for ballroom dancers, but it has nothing to do with the authentic Argentine Tango. Even ballroom dancing has now a separate category for Argentine Tango. Unfortunately, this video is not that. That's why, I rate it at 1.

A: Negative
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Q: I just returned from a month-long trip to Vietnam and Cambodia, and I found this book extremely useful for Cambodia. Not so much for hotel listings, etc., but for no-nonsense background information on Angkor, Phnomh Penh, and Siem Reap. The Vietnam portion was helpful as well, but I relied more on the Lonely Planet and Rough Guide Vietnam editions for that country. I would definitely recommend this book to someone traveling to Cambodia over the Lonely Planet edition, which is *really* outdated.

A: Positive
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Q: 1)The problems in the book are very outdated. (for grammar section buy Cliff's or Longman)2)The problems in the book are less difficult than those on a real exam.3)The problems in the book were arranged in very boring manner.4)The CD-Rom is only for Listening. (for more computer practice buy Delta's Key for Toefl Test with CD, which has 10 tests or Cambridge Preparation for Toefl Test, which has 7 tests. Both books have CD-Rom simulated CBT.)5) The Essay section is fair. (for the best essay section buy Cambridge Preparation for the Toefl Test)Generally, there is no one book for the preparation for the TOEFL. Most likely you will need some combination of them.For instance,a) Delta for practice and reading. Moreover, you may wish to buy just Delta CD Rom without book and cassets for practice only;b)Cliff's or Longman for grammar;c)Cambridge for essay and for practice.Good luck!

A:
Negative
****