英语作文（60-80字）（用第一人称以日记的形式把事情完整地表达出来）

Sunny Sunday Nov.17th,2009
David and I went to the park for a walk.But on our way to the park,we saw a man stealing a young woman's wallet.So we called the police immediately .The policeman come here very soon and caught the thief at once.The young lady thanks for our help.I am very happy now,so I write it down to share my happiness with you.