the new machine,if ___properly ,will work for at least ten years .这个句子.A use B using C being used D used ..IF 后面引导的应该是一个状语从句的省略结构吧?和谓语动词 有什么关系?

We _（test）the new machine when the others _（worWe _（test）the new machine when the others _（work）in the fields.填_部分, 英语 the new machine has been tested The new machine,if ___properly ,will work for at least ten yearsC being used D used为什么不选C 1.There is a new washing machine in the room.we know.(合并为一句)we know _ _ a new washing machine in the room2.Will he come back?i don't know.(合并为一句)I don't know _ _ _ come back. The new machine,if _________ properly,will work at least ten years.A use B using C being used D used 为什么C不对? they 've bought a new machine for the factory翻译 try__the green button to see if the machine will start. the sales manager wants to know _ there are any new markets in Asia.答案给whether,为什么不用if 英语填空 our editor gets a lot of letters from our _（英语填空our editor gets a lot of letters from our _（read）every daylisten!the workers are _（讲）about the new machine.we are _（的确）pleased with the players.our parents take_ 英语翻译In Spain there's a new way to get your fast food.A new machine called pizza magic,talks to customers,saying Would you like a pizza? If you say yes,the pizza machine will cook your pizza in two minutes.The cost is $1.80per pizza,and 英语翻译He asked his teacher if a new building had _ _ _ in his school/ He _(it)on the chair new I have no idea how I can operate the new machine.I have no idea ___ ___ operate the new machine. the new type of machine set off a wave of selling in the country什么意思 That's the new machine ( )the parts are too small to be seen The o____ of the new machine is hard to learn____填什么? 1) There is a new _ _ a _ _ bin behind the desk. a new machine called the revealer has been invented.请机器不是被叫作吗,那不是应该a new machine was called吗,为什么没有was,