What invention do you find the most/ the least useful? Why?

Решение:

• Most useful: Invention that significantly improves life. Example: electricity (электричество) - powers countless devices, provides light, enables modern infrastructure.
• Least useful: Invention with limited practical application or negative impact. Example: fidget spinner (спиннер) - primarily a toy with no essential function beyond amusement.
• Why (most): Electricity is fundamental to modern society, enabling communication, industry, and daily conveniences.
• Why (least): Fidget spinners offer little practical value and are often seen as a distraction.

Ответ: I find electricity the most useful invention because it powers our world. The fidget spinner is perhaps the least useful invention, as it serves primarily as a toy.