Worbooks Assimil . French . This box set includes two workbooks aimed at beginners and false beginners in French. The 400 stimulating exercises include a wide range of types of activites. Fun and challenging, the exercises are designed to progress in difficulty. The answer keys allow you to check how you did in each exercise and assess your level in different areas.. 400 effective and fun exercises. Practice French grammar, verb conjugation, spelling, pronunciation and vocabulary. Track your progress through self-assessment.