The collection has gone through several editions, and answer keys are typically published as a separate "Keys to Exercises" book:
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You can find the full text of Yu. B. Golitsynskii's English grammar exercise collection and the corresponding (answer keys) through several digital libraries and educational platforms. Available Versions and Answer Keys (GDZ) golitsynskii gdz skachat pdf
Specific answer keys for the 6th edition are hosted on ChemBaby.ru .
Provides a collection of Golitsynskii books for download at Frenglish.ru . The collection has gone through several editions, and
A complete 571-page PDF of the 7th edition workbook is available on Scribd and via Yandex Disk.
The 2006 edition is available for download at Anahita Mirkhanyan's blog . Where to Download or Read Online A complete 571-page PDF of the 7th edition
Offers the "Keys to Exercises" for the 8th edition in PDF and other formats at Flibusta.su .