On sites like GDZ.ru, you can browse by Unit Number (e.g., Unit 1) and then by Exercise Number (e.g., Exercise 2) to find exact matches.
Translations and answers for text-based tasks. 2. Guide to the Textbook Structure otvety.ru anglijskomu jazyku 10-11 klass kuzovlev 2009 god
Solutions for grammar and vocabulary exercises. On sites like GDZ