Elem to Adv. A1 - C2. Grammar practice series which reflects the needs of students at each stage of their learning. Basic provides lots of practice & short explanations. Intermediate gives you more detail, with extended practice. Advanced gives challenging practice activities & in-depth explanations. Revision units help focus on the grammar that needs more practice. Exit tests ensure the student is ready for the next level. Students are able to see & correct their own mistakes using the CD-Rom. Publ. 2006/2008.