To ensure you are actually learning the material rather than just copying, follow this workflow:
: Offers a digital version of the solutions, organized by exercise number. This site is highly reliable for checking individual tasks. gdz po angliiskomu ia zyku grammatikaiu golitsynskii
: Complete the exercise on your own first, marking any sentences where you feel unsure about the tense or article. Compare : Open a resource like GDZ.ru to check your answers. To ensure you are actually learning the material