----May we leave the classroom now?
----No, you . You to leave until the bell rings.
| A．mustn’t; are allowed | B．can’t; aren’t allowed |
| C．don’t have to; are allowed | D．needn’t; aren’t allowed |
----May we leave the classroom now?
----No, you . You to leave until the bell rings.
| A．mustn’t; are allowed | B．can’t; aren’t allowed |
| C．don’t have to; are allowed | D．needn’t; aren’t allowed |
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