Yes, but with nuance. The official ABC DELF B2 2021 is a copyrighted work by Clé International. You can find:
In the two weeks leading up to your exam, sit down and complete the remaining mock tests from the book back-to-back. Use a timer. This builds the mental stamina required to sit through the actual 2.5-hour written test. Important Note on PDFs and Copyright abc delf b2 2021 pdf
Complete one full practice test from the book without a timer. Identify your weakest skill (e.g., writing or listening) and allocate more study hours to that specific area. Yes, but with nuance