Grammar and Composition II Supplementary Exercises Teacher Key accompanies the sold-separately Grammar and Composition II supplementary exercise book. With accurate answers, explanations to the answers, and teaching notes, this teacher key will help you put your child on the road to successful grammar and composition. Save time from having to work on each exercises on your own and have all the tools you need to guide your teen in his learning at home. 78 pages, softcover. Grade 8.