If you're looking for solutions, here are a few suggestions:
One of the most trusted course ecosystems for achieving this is Cornelsen's (and its updated edition, Studio 21 ). A critical component of this learning suite is the Testheft (test booklet) along with its Lösungen (answer keys).
: Falsche Antwort aufgrund von Unwissenheit – Hier müssen Sie die Grammatikregel oder die Vokabeln komplett neu lernen. Arbeiten mit den Hörtext-Transkriptionen
for the official B1 German certificate.