puts the spotlight on this tricky grammar trouble spot. It boasts plenty of opportunities for practicing your language skills, as well as extensive examples based on a conversational style that will keep you engaged. The book also features a unique answer key that gives you more than just a listing of correct answers; it clues you in on the “why” behind them. Combine those features with the renowned Practice Makes Perfect format and you have the ideal reference/workbook to learn to speak and write English with fluency.