Studio 21 didn't change the past—the clock still ticked forward, and his grandfather was still gone. But as Leo stepped back from the finished piece, the memory of that day was no longer a jagged scar. It was a soft, golden landscape.
The most authoritative source for is the Lehrerhandbuch . It contains not only the answers to the textbook exercises but also the answer keys for the workbook (Arbeitsbuch). This is the gold standard. studio 21 a1 correction