Do you have a specific question from the book? Drop it in the comments!
Schritte plus Neu 5 B1/1 Lösungen Kursbuch: A Teacher’s Guide (Without Just Giving the Answers) schritte plus neu 5 b1/1 lösungen kursbuch
If you genuinely cannot figure out an exercise after 10 minutes, it is not a failure—it is a gift. That exact grammar point is what you need to study next. Do you have a specific question from the book