This is a splendid book. The content is well-thought-out and based on eye-catching visuals provided with a brief and clear explanation of the most tricking grammar aspects.

Natalia Ignatova

Teacher, Academy of Intellectual Property

David's materials have really helped me to bring my spoken English to the next level. They are really interesting and challenging.

Martin Perrone

Finance Director, AB Mauri Hispano-America

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