C 解析：表示道歉的常用語有：Excuse me(for…)／I'm sorry.／I hope you'll excuse me.／I beg your pardon.／I must apologize.等等。應(yīng)答語有：It doesn't matter(at all).／It's nothing.／Not at all.／That's(quite)all right(OK).／Please don't worry about that.／Never mind about that. ／Please think nothing of it.／Let's forget it.／No problem.等等。 拓展延伸：在需要打擾或冒犯對方時，常用Excuse me. 當自己有過錯需要對方原諒時，可用Excuse me(for…)或I'm sorry…但在某些場合你并沒有過錯時，要慎用I'm sorry，以免承擔不應(yīng)承擔的責任。
