This switch must not be touched on any account什么意思,给出语法 谢谢了怎么识别句子倒装的？

This switch must not be touched on any account什么意思,给出语法 谢谢了怎么识别句子倒装的？ 15 We must not touch this switch under any ______.A.situation B.case C.circumstances D.occasion选择哪个 this is unregister number could not switch啥意思?切换手机卡的时候出的提示. 苹果手机打电话,总是提示一串英文“This is unregister number,could not switch” what must be done to ensure that this new switch becomes the root bridge on the network 在手机app store上购买软件或更新软件时显示account not in this storeyour account is not valid for use in the u.s. store. you must switch to the chinese store before purchasing.要怎么弄?……解决了,可是百度不让取消提问 you must not eat the apples on it this year. must not must not 关于must的否定1.You must switch off the lights.(该为否定句)You ________ _________ switch off the lights.为什么答案是must not 而不是need not?我知道，可是关灯既可以是没必要的，也可以是必须不的。 Account Not In Store.Your account is not validAccount Not In Store.Your account is not valid for use in the U.S.store.You must switch to the Chinese store before purchasing. switch he must have read this book yesterday?反问?did not he?have not he?为什么 this book is mine .it ____be yours a:cannot b:must not c:may not A:they must be mad about this!B:not really这个not really We must ____(switch on/switch off)the lights before we leave the classroom. this book must not __（lend) t o others ,you must __(return) it before Fridy .用适当语态填空 You must not swim in this river .It's too deep.改为祈使句