the invention is very o___ Few people think of it

What is the easiest invention today? What is the easiest invention today? 猜一猜 what is the easiest invention today? The alarm clock is an a____ invention. Necessity is the mother of invention. The second —— invention is computer the invention What do you think_____ A the most useful invention is B is the most useful invention what do you think is the ___(annoy) invention? the invention is very o___ Few people think of it The new invention is so wonderful.（改为感叹句） be referred The invention of gunpower is referred to China this is the invention called flying donuts 改为同义句this is the invention 三空 flying donuts re-invention of the The man d_____ is ver friendly根据句意及首字母填空 选择并解释the British ___are/is ver proud of their sese of humour The computer is ______ useful invention in the modern wored.A.a B.an C.the helpful,I,is,think,most,the,telephone,the,invention(连词成句）