Biboletova’s books have many editions (e.g., the 2022 9th edition). You must ensure the GDZ you are using matches the specific year and "title" of your book (e.g., "Enjoy English" vs. the newer versions published by Drofa/Prosveshcheniye ). Summary Verdict
Many students rate these resources highly (often 4.5/5 stars), noting that they help secure good grades on homework assignments. The Challenges (Cons)
Because these textbooks have been around for a long time, the GDZs for them are very refined. You'll find solutions for everything from the main Student’s Book to the Workbook (Рабочая тетрадь).
It’s easy to fall into the trap of "blind copying." If a student doesn't look at the explanations, they may struggle during in-class tests where the GDZ isn't available.
The series by Biboletova et al. is one of the most widely used English textbook series in Russian schools. Because it’s so common, the GDZ (Готовые Домашние Задания) or "solved homework" materials for it are extensive and highly rated by students.