<P> <i>GrammarWork, English Exercises in Context</i>, Second Edition, by Pamela Peterson Breyer, is a four-level series of exercise books that feature structures tied to meaningful contexts. Self-contained, contextualized exercises are designed for written practice; "Make It Work" sections enable students to apply what they have learned to realistic situations. Perforated answer keys are included. <i>GrammarWork 4</i> is for high-intermediate students. </P>