: If there is a "Think and Answer" (open-ended) section, try to change a few words so it doesn't look identical to the online answer.

: Ensure the GDZ site matches your workbook's edition (e.g., 2021, 2023, or 2024), as page numbers or specific questions sometimes change in newer prints.

: One of the most reliable sources, providing clear images of the completed pages for every lesson.