wifi app must be off first.is will power off.

wifi app must be off first.is will power off. phones must be kept off _____ the talk 请说明原因The light in the room__before you leaveA must turn off B will turn off C are turned off D must be turned off App All the beepers and mobile phones must ___ in classA.keep off B.take off C.be taken off D.be kept off it is 10 o'clock.I must ____now.A.be leave B.to leave C.be off D.off Our monitor suggested that the meeting____until next Saturday afternoon.A can put off B must put off C be put off D should put off The light in the room must be turned offThe light in the room must be turned off before you leave .为什么要用must be 不是填must turn off something must be done to ______ the bird flu.Something must be done to ______ the bird flu.A) turn off B) take off C) put off D) keep off We must be off now. 请根据主语 谓语 宾语 状语 表语 等 划分一下 结构 this wersion of windows must be installed by booting off of the CD 请问must be off ,see 请问这句话是什么意思,以及是一种什么语气. He suggested __(set)off right away.There must be something__(visit)our homes. must be “I really must be off now?Well,I really must be off now?该如何回答?为什么这个问句最后是以问号结尾？是不是有“难道我一定要走吗？”的意思？回答可不可以是“I`m afraid you must” what must be must be! we must be off right away .It's 8 :00 already .为什么OFF前面有个be,是因为情态动词吗 这几道题求解,关于被动语态的.谢谢~1.Attention, please! All the mobile phones_________during the meeting.A. must keep off B. have kept off C. are keeping off D. must be kept off2. He often________people laugh and many people ______