Understanding and Using English Grammar Workbook B (with Answer Key) by Betty S. Azar
The Workbook consists solely of self-study exercises, with answers included, providing students the opportunity to explore and practice grammar independently. It is keyed to explanatory grammar charts in both the Student Book and the Chartbook.
Understanding and Using English Grammar is a classic developmental skills text for intermediate to advanced English language learners.
Note: This ISBN is just the Workbook and Answer Key - if you want the boook/CD's order the ISBN below:
0132333317 | 9780132333313 Understanding and Using English Grammar with Audio CDs and Answer Key, 4/e