Cita:
For learning grammar, you’ll find the most success in retaining your skills through drills, drills, and more drills. English Grammar Drills reinforces your knowledge and enhances your ability to read, write, and speak in English. Each chapter deals with only one subject, so you are not overwhelmed with information and drills and can proceed at a comfortable pace. With close to 200 exercises you will get plenty of opportunities to practice what you have learned.

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http://www.data-stock.com/22162/English_Grammar_Drills.rar.html