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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1209

—Did you talk back to your mother when you were a child?
—Yes. But now I realize I was wrong. I really regret _____ that silly thing to my mum.

A.do B.to do C.doing D.did
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—Didyoutalkbacktoyourmotherwhe