问题:
—Mom, must I clean the room now?
—No, you ________.
[ ]
A. must
B. must not
C. can"t
D. needn"t
—Mom, must I clean the room now?
—No, you ________.
B. must not
C. can"t
D. needn"t
—No, you ________.
[ ]
A. must B. must not
C. can"t
D. needn"t
参考答案: