It covers everything from vowel alternations in roots (a/o, e/i) to the correct placement of stress and direct speech formatting.
The L'vova 5th grade textbook is a brilliant tool for building a strong linguistic foundation. While GDZ can be a helpful safety net to reduce homework stress and help you work independently, it should be a teacher, not a typewriter. uchebnik lvova po russkomu iazyku 5 klass gdz
Try the exercise on your own for at least 15 minutes before looking at the answer. It covers everything from vowel alternations in roots