题目内容
－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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－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
阅读快车系列答案