问题

May we leave the classroom now—-No, you .You to leaveuntil 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
B:can’t; aren’t allowed
C:don’t have to; are allowed
D:needn’t; aren’t allowed
正确答案是:
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