the invention is very o___ Few people think of it

the invention is very o___ Few people think of it Though the movie has a few good (f ),many people think it is Because it is very cold,there are few people in the street.这 think of an invention that could help people in need I think the most helpful invention is light bulb. It  & 英语翻译Invention of glassesWhat is the most important invention A few people think about it. People think it is very cold.改为同义句 Which of these do you think is the most useful invention?中do It is ________cold ______there are few people in the street 句子改成被动语态 today people think it is one of the greatest books Necessity is the mother of invention