For 1st declension nouns (like берёзка , окраина , рябина ), the ending is used in the Dative and Prepositional cases. For 2nd declension nouns (like воздух ), the ending -е is used in the Prepositional case. None of these words belong to the 3rd declension, which would require the ending -и . ✅ Final Answer
The completed exercise 229 for the 4th-grade Russian language textbook by T.G. Ramzaeva involves identifying the case of nouns and correctly spelling their endings. Completed Text for Exercise 229 For 1st declension nouns (like берёзка
По (Dative) лепечут осинки. На берёзке (Prepositional) светятся золотые листочки. В воздухе (Prepositional) кружится тонкая паутина. На рябине (Prepositional) висят гроздья ягод. 1. Identify noun endings For 1st declension nouns (like берёзка