This document provides an introduction to 501 sentence completion questions. It discusses strategies for answering sentence completion questions, such as reading the entire sentence and paying attention to introductory and transitional words. It also describes the different types of sentence completions, such as restatement, comparison, contrast, and cause and effect. Signal words that indicate each type are provided as examples. The introduction concludes by stating that completing the exercises will help assess strengths and weaknesses and improve verbal exam scores.