A further quarter book short breaks only two to four weeks ahead, while a third (35%) book one to three months in advance.

另外有四分之一的人仅提早两至四周预订短期度假，而三分之一(35%)的人提早一至三个月预订。

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These content is in our four revision books: text-book, exercise-book, and our other two study materials.

考试内容就在我们四本书里：课本、练习和其它两本学习材料。

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The authors of the book, Bert Sperling and Peter Sander , collected the number of two- and four-year colleges and the number of universities with selective admissions from the National Center for Education Statistics and Princeton Review, respectively.

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