题目内容
The room must _____ up right now. It’s too dirty.
| A．be cleaned | B．be cleaning |
| C．clean | D．cleaned |
A
解析试题分析：句意：这间房子必须马上被打扫。它太脏了。must是情态动词，故后面接动词原形，结合句意主语the room与谓语clean之间是被动关系，故用被动语态，故选A。
考点：考查被动语态。
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