The following paper provides a structured overview of the 6th edition of the by Yuri Golitsynsky , commonly referred to as "GDZ" (Gatoviye Domashniye Zadaniya) when used for its answer keys.
High-repetition exercises to master the usage of "a/an/the" and relationship-showing words. 2. Using GDZ Responsibly
Use the 6th Edition Keys to identify recurring errors in subject-verb agreement or article usage. 3. Educational Value