This workbook by Vaulina and Dooley is widely used. Sites like Gdz.ru provide page-by-page breakdowns of every module, from "Family Members" to "Festive Time".
Most Russian schools use a few specific curricula. You can find digital keys for almost all of them on platforms like Gdz.ru or Skysmart . gotovye zadaniia po vork buk angliiskii iazyk 6klass
For students using this international series, OnlineGDZ offers step-by-step answers for every unit. How to Use "Gotovye Zadania" Without Failing Exams This workbook by Vaulina and Dooley is widely used
ГДЗ по английскому языку за 6 класс gotovye zadaniia po vork buk angliiskii iazyk 6klass