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题目内容
（管理英语）
— Mom, must I finish my homework now?
— No, you ______. You may have supper first.
选择一项：
A. can.t
B. needn.t
C. mustn.t
— No, you ______. You may have supper first.
选择一项：
A. can.t
B. needn.t
C. mustn.t
参考答案
