"GDZ" (готовые домашние задания) refers to for specific school textbooks . Based on the description "posobie dlia uchashchikhsia 7-9, 11 klassov izdanie pervoe" (Manual for students of grades 7-9 and 11, first edition), this most likely refers to the first edition of the famous English grammar exercise collection by Yury Golitsynsky , as its structure historically covered these specific grades. Overview of the Manual
: One of the largest repositories for solutions across all subjects and grades. : Provides context on how to use these
: Provides context on how to use these manuals for self-checking rather than just copying. Usage Tips : Provides context on how to use these
: Ensure the exercise numbers in your GDZ match your physical book, as the "first edition" may have different numbering than the current "eighth edition" found in most stores today. : Provides context on how to use these