The son told his father that he and three other boys did a good deed today by helping an old woman across the street. http://www.51education.net来自无忧英语教育幽默笑话频道
“Why did it take four of you?
“Because she didn’t want to go there.
儿子告诉爸爸他和其他三个男孩今天做了一件好事，帮助一位老大娘过马路
“为什么需要你们四个人呢？
“因为她根本不想过马路”
注：因为学校规定了学生每天必须做一件好事，帮助老太太过马路是最方便的那种