If a common noun (like река ) comes a proper name ( Волга ), you generally do not use a hyphen.

A standard resource for checking Russian language homework for the Trostentsova 8th-grade curriculum.

If you need to verify other sentences from this specific exercise, you can find step-by-step breakdowns on educational platforms:

Key Grammar Rules for Exercise 142

In this specific exercise, "реку" acts as a descriptive appositive for the proper name "Волгу." Where to Find Full Solutions

The task typically asks you to rewrite sentences, inserting the appropriate appositive in the correct case and adding necessary punctuation (usually dashes or commas).

For exercise 142 from the 8th-grade Russian textbook by , the focus is on identifying and correctly punctuating appositives (приложения)—a specific type of definition expressed by a noun. Exercise 142 Breakdown