The machine (must be kept) in a dry and cool place括号里对吗 为什麽
问题描述：
The machine (must be kept) in a dry and cool place括号里对吗 为什麽
答
对, 含有情态动词的被动语态
The machine (must be kept) in a dry and cool place括号里对吗 为什麽
对, 含有情态动词的被动语态