Must I be home before eight o'clock，Mum？
No，you _____．But you have to come back before ten o'clock．（ ）
A．mustn'tB．can'tC．needn'tD．couldn't
Must I be home before eight o'clock，Mum？
No，you _____．But you have to come back before ten o'clock．（ ）
A．mustn'tB．can'tC．needn'tD．couldn't
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