Electric trains have taken the place of steam ones能够解释一下ones吗

Electric trains have now taken the place of steam ones Electric trains have taken the place of steam ones能够解释一下ones吗 electric trains steam trains in JapanElectric trains ________ steam trains in Japan now.A.have taken the place ofB.have been instead of详解,谢为什么不用 a 如果用instead of应该怎么用啊 electric electric electric electric “I have made today the electric lamp bulb.,again Trains have taken ___of horses.A.a place B.the place C.place D.places 新概念英语三中的一点内容?We have learnt to expect that trains will be punctual. 改错Because of it was snowing heaviy,all the trains have stopped electric fire electric vehicles reduced electric Electric Chapel electric appliance electric咋读 这个句子是虚拟语气吗?If operated by computers in the future,many trains will have no drivers.如果是的话为什么不符合一般虚拟语气的标准呢?为什么不是many trains would have drivers呢?