问题
选择题
— Mum, must I finish my homework first?
— No, you _______. [ ]
A. can't
B. mustn't
C. couldn't
D. don't have to.
答案
答案：D
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— Mum, must I finish my homework first?
— No, you _______. [ ]
A. can't
B. mustn't
C. couldn't
D. don't have to.
答案：D