№24-27. Озеро заросло (24).... На другом его берегу виднелись зеленые рощи. За рощами были видны белые дачи, а за дачами начинался (25).... Мы любовались (26)..., пока тучами не (27)...

The question asks to fill in the blanks (24-27) with the correct word forms. Based on the context and grammatical rules, the correct options are likely related to the noun 'камыш' (reed) and 'лес' (forest). Without the specific options for blanks 24, 26, and 27, only the answer for blank 25 can be inferred from the provided choices. The sentence structure suggests a noun in the genitive case after 'начинался'. Therefore, 'настоящего леса' is the most grammatically appropriate choice for blank 25.