Sentence Skills Form A Author:John Langan This successful Langan worktext continues to help students master the essential grammar, mechanics, punctuation, and usage skills needed for clear, thoughtful writing. SENTENCE SKILLS features a flexible format that has been noted by numerous instructors for its varied, engaging exercises and mastery tests. The sixth edition features a new ope... more »ning section on the writing process complete with a careful sequence of interesting activities that help students learn and master the principles of effective writing, one step at a time.« less