题文
The room is in a terrible mess; it __________ have been cleaned.
| A．can't |
| B．mustn't |
| C．shouldn't |
| D．wouldn't |
推荐试卷
The room is in a terrible mess; it __________ have been cleaned.
| A．can't |
| B．mustn't |
| C．shouldn't |
| D．wouldn't |
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