They use computers to keep the traffic----smoothly A.being run B.run C.to run D.runing但我认为这个应该选A,表示被动啊,为什么选A不选D呢?各位哥哥姐姐帮下忙哈

children are t--- how to use computers when they are very young we ()(use) computers everyday we can use computers to s_______lots of information they are very helpful They use computers to keep the traffic_____smoothlyA.being run B.run C.to run D.running they use computers to keep the traffic running smoothly可以是将running换成being why? 求用英语描写三年后的学校 ,几句!范文：I think that everone will study at home and will use computers.They won’t use the books.They‘all use the Internet.例如范文...不能跟这些一样!最好用上 in the future will ...之类 writers now use computers to w____,students use computers s____ writers now use computers to w____ students use computers s____ 1、用be going to 和 be +ving变换句子.People will have robots in their homes.2、People won't use money .Everything will be free.3、Books will only be on computers ,not on paper .4、Kids won't go to school .They'll study at home on computers. 英语陈述句转换为一般疑问句.People will have robots in their homes. People won't use money.Everything will be free. Books will only be on computers,not on paper. Kids won't go to school.They'll study at home on computers. There will only Will there be schooi in the future?No,there won't.I think that everyone will stud at home and will use computers.The'll use the Internet.And will they send their homwork to the teachers by email?Yes,they will.And students will talk to their teachers 英语阅读题答案...We live in the “computer age(时代) ”.People like scientists,teachers,writers(作家) and even students use computers to do their work .But more than 30 years ago,computers couldn’t do much.They were very big and expens 解释下列句子的意思（英语）1.People will have robots in their homes.2.People won't use money .Everything will be free.3.Books will only be on computers,not on paper.4.Kids won's go to school.They'll study at home on computers.5.There will they use paper bags,they don't use plastic bags.they use paper bags___ ___ ___plastics bags. They use computers to keep the traffic run smoothly.请翻译一下并说明run的词性 they use computers to keep the traffic ( ) smoothly. A.being run B.run C.to sun D.running They don't use any p( ) money.They use credit cards . We live in computer age.People like scientists,teachers,writers and even students use computers to do ___work.But more than 30tears ago,___couldn't do much.They were very big and expensive.Very___people were interested in them and knew how to use the