题文
No one is permitted __________ the room until the chairman declares the end of the conference.
| A．leave |
| B．to leave |
| C．leaving |
| D．left |
推荐试卷
No one is permitted __________ the room until the chairman declares the end of the conference.
| A．leave |
| B．to leave |
| C．leaving |
| D．left |
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