-May we leave the classroom now?-No, you _______. You _______ to leave until the bell rings.
#74240
A
can't; are allowed
B
mustn't; aren't allowed
C
needn't; are allowed
D
needn't; aren't allowed
推荐题目
Li Lei isn’t ____ Liu Ming. 
#77741
A
tall as
B
as taller as
C
as tall as
D
as the taller as
—May I use your computer, Mr WU?   —______.
#74621
A
Yes, you may not
B
No, you may
C
Yes I may
D
No, you may not