If you are looking specifically for community-shared files on VK (Vkontakte) , users frequently share several similar B1 titles: Grammar and Vocabulary Booster B1

: Provides the full Student's Book content with the answer key printed directly over the exercises for quick classroom checking. Teacher's Resource CD-ROM

Exercises are modeled after standard exam papers, including "Key Word Transformations" and "Word Formation" tasks .

: Exercises are modeled after major exam formats, including Paper 3 of the Cambridge FCE. Book Structure and Contents