This document provides an agenda and instructions for Class 17 of an English writing course. It includes sections on introductions, conclusions, and sentence strategies for student essays. For introductions, it recommends starting with a scenario, statistics, historical analogy, or other engaging techniques. For conclusions, it suggests summarizing the solution and advantages, reminding readers of something special about the problem or solution, or suggesting consequences of failure. It also discusses avoiding ambiguous uses of "this" and "that" and revising sentences that lack an agent. Students are assigned to add an introduction and conclusion to their draft, check for clarity and agents, and submit a copy for next class along with a self-assessment of their blog posts.