It is very common for Class 8 students to lose their English practice book mid-session. A downloaded PDF acts as an emergency backup until a physical replacement is bought.
Ethically, making a full photocopy of an entire copyrighted book is piracy. However, photocopying 10-15 pages for personal study (fair use) is generally accepted in India. Ask a friend to share photos of specific exercises, not the whole book. class 8 bbc compacta pdf
Most editions of BBC Compacta have a available separately. If you have a PDF of the main book, ask your teacher for a photo of the answer key pages. Never solve without checking corrections. It is very common for Class 8 students