单选题 The wrong you've done her is terrible, for ______ you should say sorry to her, I think.

【正确答案】 B
【答案解析】理解句意是解出此题的关键所在。“你对她犯下的错误很可怕，我想你应该为此向她道歉。”此处应填关系代词which代替主句中的the wrong you've done her，引导非限定性定语从句。