One day I went out and left my key in the house. When I came back，I found f couldn’t get in without my key. What should I do? After a moment，I got an idea. I picked up a big stone and was ready to break the window. Suddenly there came a deep voice,“What are you doing?" I turned over and saw a policeman was behind me. It took me quite a long time to explain myself. I won't be so careless again.
注释:
1) I left my key in the house.我把钥匙忘在家中。
2) There came a deep voice.一个深沉的声音传来.
3) It took me quite a long time to explain myself.我花了好长时间对我的行为作解释.