—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
答案:D
—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
答案:D