You haven't fully mastered B2 grammar. C1 assumes you know the basics and focuses on the "fine-tuning." Tips for Success with Aspekte Neu C1.1
is not a relaxing book. It is a boot camp for your German brain. But if you complete all 5 chapters and the accompanying workbook diligently, you will walk into the C1 exam with legitimate confidence. You will stop translating from English. You will dream in German, and you will notice that you finally understand the Witz (joke) your colleague told at the coffee machine. aspekte neu c1.1
Without the manual, you might do exercise 5, assume your answer is fine, and never realize you made a case error. You haven't fully mastered B2 grammar