many ways have been found_small and simple machines to processlarge and complicated machine parts a by usingb to usec usingd used

Since ancient times,people (send) ____________messages in many different ways.为什么要用have sent不用have been sent...since不是用于现在完成时种么... many ways have been found_small and simple machines to processlarge and complicated machine parts a by usingb to usec usingd used We have many different ways （）the work i have been here many a how many have you been here have,been,to,zoo,many,the,we. In many ways we look the same 改为同义句We have many things Since the earliest times, trees have always been very useful and important to man who made use of them in many ways. Even today trees continue to serve man in so many ways.　Trees provide man with fruits and building materials in the form of wood. W 英语翻译Since the earliest times,trees have always been very useful and important to man who made use of them in many ways.Even today trees continue to serve man in so many ways.Trees provide man with fruits and building materials in the _____travel in many ways. 英语翻译Frida's natural talent to express her feelings was on canvas.Her paintings expressed her deep emotions,portrayed in interesting ways.Frida's greatest paintings were believed to have been painted in her time of great depression.Many believ 英语翻译On the losing of Traditional CultureIt is widely noted that lots of traditional culture is disappearing along with the development of technology.Many ancient architectures and traditonal ways of living have been deserted.It seems that the 一道国外数学题Ten students have been nominatedfor the positions ofsecretary,treasurer,social convenor,and fundraising chair.In how many ways can these positions be filled if a pair of twins are running and plan to switch positions on occasion How many cities_____you_____so far?A.have；been B.have；gone to C.have；been to D.have；been in The ways to make waste water clean have been found by them.翻译 I see placed that I have been in ways that I'd never seen Many people ____from recent car accidents on high ways.(death)是填have died 还是died? My parents and i have many different ideas __ different ways