The right explanations and practice for your language level, plus the only CD-ROM with interactive 'find and correct the mistake' exercises. This three-level grammar practice series takes students through from elementary to advanced level English. The way in which grammar is presented and practised reflects the needs of the student at each stage of their learning. 'Basic' provides lots of practice and short explanations; 'Intermediate' gives you more detail with extended practice; 'Advanced' gives challenging practice activities and in-depth explanations.