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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:537

It ________ have been her to leave her child alone and do whatever she wanted. She isn't such a person.

A.couldn't  B.mustn't
C.mightn't  D.wouldn't
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Ithavebeenhertoleaveherchildal