求一篇名字叫《a unusual experience》的英语作文!不要太长，题目的意思是《一次不寻常的经历》

One day,I went to ski with my friend,Li Mei.We were playing happily on the ice when I heard a shout"Help".I turned back and was surprised to see a boy falling into a ice hole.But neither of us could swim.So Li Mei and I ran to ask for help.A few minutes later,a policeman came and pulled the boy out of the water.What an unusual experience it was!