phones must be kept off _____ the talk
all beepers and moble phones should be kept off during the m
all the mobile phone must be kept off,这句话中的keep off怎么翻译
The book ____ from the library must be kept well.
翻译:The wheels of industry must be kept turning.
The medicine must be kept away from children
the room must be kept wet.变成被动语态!
为什么是must be kept而不是must to be kept
The light in the room must be turned off
The medicine must be kept cool不是说系动词没有被动语态吗
I don't know.Must the medicine be kept cool,clean and dry?合并
all the____(enter)must be kept open in the stadium during th
英语翻译This record must be kept on file in the Health Center.An