帮回答三条问题 谢谢
1.请问interrupt跟disturb有什么区别？请举例说明。
2.apologize to sb. for doing sth. 跟apologize to sb. for having done sth.有什么区别？看下面两例子都是表示过去的啊？
I apologized to her for stepping on her foot.
He apologized to Mary for having kept her waiting.
3.error fault mistake duty 的区别
