To use workbooks effectively will save you lots of trouble and sweat in the future.
Before you start doing all the exercises in your workbook, make sure you have learned the corresponding lessons in your students book, then you can:
1. Do all the written exercises first. In this way, you will see all the target words again and again, and this visual impact is important for further task.
2. Do 2-3 listening exercises. Make sure you understand 98%. If you have questions, go back to your book or ask your teacher, do a short revision
3. Finish the remaining listening exercises.
4. Review and further exercises.