: Look for PDF files, as they are easily readable on any smartphone using standard apps like Google Drive or specialized PDF readers.

Грамматика: ключи к упражениям. 8-е изд., испр.

: Comprehensive exercises on English tenses and the passive voice.

: This platform hosts several uploaded documents with answers (e.g., exercises 200-250) that can be read online or downloaded. Content of the 8th Edition

: Provides a direct link to download the 8th Edition "Keys to Exercises" (Грамматика: ключи к упражнениям) as a 75MB PDF file.

: Conditionals, indirect speech, and modal verbs. Tips for Mobile Use

: Dedicated groups like "Ключи Грамматика Ю. Б. Голицынский" offer organized answers and often host files for various editions.