If you tell me which or exercise number you're stuck on, I can help you: Solve a particular problem. Explain the underlying rule. Find similar practice exercises.
Грамматика. Сборник упражнений. Голицынский Ю.Б
🌟 The answer keys are published as a separate book , so when searching, look specifically for "Ключи к упражнениям" (Keys to Exercises) rather than the textbook itself.
If you consistently miss answers in specific chapters (like Articles or Passive Voice), revisit the theoretical material provided in the textbook.
Use the keys primarily to verify your work after completing a section to ensure you have grasped the rules correctly.