问题:
一May I go now?
一No, you _______.
[ ]
A. must
B. needn"t
C. mustn"t
D. could
一May I go now?
一No, you _______.
B. needn"t
C. mustn"t
D. could
一No, you _______.
[ ]
A. must B. needn"t
C. mustn"t
D. could
参考答案: