Freshly redesigned and updated, the Revised Key to Purple Workbook gives clear, thoroughly-explained answers to all exercises in the Revised Purple Workbook, one of four non-sequential books in the Grammar for the Well-Trained Mind series, providing detailed, well-designed exercises in the correct use of English gramma Well-Trained Mind resource: https://welltrainedmind.com/p/grammar-well-trained-mind-key-purple-workbook/