"Book Six concentrates on teaching Form Two, Three and Four Verbs in a comprehensive manner, covering regular and irregular verbs in various moods and tenses. It introduces the subjunctive and jussive moods and the particles that govern them. The key theme running through the book is the weather and seasons and the student will learn to talk about the temperature and climate in various parts of the world at different times of the year. As usual, passages of dialogue and extensive exercises enable the student to put into practice the knowledge he/she has acquired. "
you can view Gateway to Arabic Book Six answer booklet and then download the file only for your personal use.