问题
May we leave the classroom now — NO, you . You to leave until the bell rings.
A:mustn’t ; are allowed
B:don’t have to ; are supposed
C:needn’t ; aren’t allowed
D:can’t, aren’t supposed;
B:don’t have to ; are supposed
C:needn’t ; aren’t allowed
D:can’t, aren’t supposed;
正确答案是：
