速求英语课前演讲的一篇150来字的英语小幽默

petty trick(小聪明)
Mrs.Adams'old grandfather lived with her and her husband.Every morning he went for a walk in the park and came home at half past twelver for his lunch.亚当斯夫人的老祖父和她夫妇俩住在一起.每天早上,他都到公园去散步,然后在十二点回家吃午饭.
But one morning a police car stopped outside Mrs.Adams' house at twelve o'clock,and two policemen helped her grandfather to get out."The poor old gentleman lost his way in the park and called us for help,so we sent a car to bring him home."Mrs.Adams was very suprised,but she thanked the policemen and they left.但有一天上午十二点的时候,一辆警车停在了亚当斯夫人家门外,然后两个警察扶着她祖父出来了,"这位可怜的老人在公园迷路了,并打电话给我们求助,所以我们派了辆车把他送回家."亚当斯夫人很吃惊,但她谢了警察,然后他们离开.
"But,Grandfather,"she then said,"you've been to the park nearly every day for twenty years.How did you lose your way there?""爷爷",然后她说,"二十年来你几乎每天都要去公园,你怎么会在那里迷路呢?"
The old man smiled,closed one eye and said,"I didn't quite lose my way.I just got tired and I d