问题
选择题
—Must I do my homework now? Mum.
—No, you _____.You can do it after supper.[ ]
A. can't
B. needn't
C. mustn't
D. don't
答案
答案：B
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—Must I do my homework now? Mum.
—No, you _____.You can do it after supper.[ ]
A. can't
B. needn't
C. mustn't
D. don't
答案：B