题文
May we leave the classroom now？
No，you ________．You to leave until the bell rings．（ ）
| A． |
needn't； aren't allowed |
| B． |
may not； are allowed |
| C． |
mustn't； aren't allowed |
| D． |
can't； are allowed |
May we leave the classroom now？
No，you ________．You to leave until the bell rings．（ ）
| A． |
needn't； aren't allowed |
| B． |
may not； are allowed |
| C． |
mustn't； aren't allowed |
| D． |
can't； are allowed |
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