: An exclusive online checking system identifies mistakes instantly and directs you back to the specific text lesson needed for correction.
: A series of drills and tests check your knowledge. At the end of each unit, you receive a score that determines if you should move forward or review the material. Why This Collection Remains Popular bbc english plus interactive 30 cds hot
: Learners have access to over 2,300 interactive exercises that utilize a "Listen, Repeat, and Compare" audio function. : An exclusive online checking system identifies mistakes