offers clear, step-by-step answers for both Part 1 and Part 2 of the 2019–2022 editions.
It seems you are looking for the for the 2nd Grade Russian Language textbook by Kanakina and Goretsky , specifically for a certain "piece" or part.
is another widely used resource for quick access to exercise numbers and their corresponding solutions.
Since the textbook is divided into two parts, you can find the complete solutions on several popular educational platforms:
provides detailed explanations that can be very helpful for understanding the grammar rules behind the answers.