The light in the room must be turned offThe light in the room mus_英语解答

The light in the room must be turned off
The light in the room must be turned off before you leave .为什么要用must be 不是填must turn off

人气：262 ℃　时间：2019-12-27 15:27:11

解答

因为灯不能自己关必须得人为的关掉,所以得用被动语态