ответ:The light bulb has greatly changed the world in many ways that continue to influence how people experience their lives today. A long time ago, the use of natural sources, such as candles, lamps and firewood, was a common way to illuminate dark places. Billions of people got used to the convenience of a light bulb in that they could not imagine life without it.
So much has changed in our society since the invention of the light bulb in the late 1800s. Then, apart from using sunlight, torches and everything that could hold fire, it was used for light. ("A Brief History of Lighting", n.d.) When the light bulb was created, it was instantly found in many homes everywhere.The light bulb has brought many new opportunities and innovations that have changed people's way of life. The light bulb has also brought other benefits besides lighting at night, such as job growth, products and the economy. (Kalinovsky, n.d.)
Объяснение:
2 Is the water in the tube boiling now?
3 Were the students carrying out the experiment from 5 to 7 o'clock?
4 Are our plants and factories producing about fifty kinds of synthetic rubber at the moment?
5 Are the students listening to the lecturer?
6 Is my friend preparing for the seminar in the reading hall?
7 Will we be translating the article when he comes?
8 Will he be reading in the library at that time tomorrow?