A young man once bought a pair of pants（裤子） in a clothes shop. However, when he got home and put it on, he found that it was two inches longer.
Then he came out of his room. His mother and two sisters were washing dishes in the kitchen.
"The new pair of pants is too long and needs to be shortened（被截短） by about two inches. Now I have to go out to meet some friends. Would one of you like to do this for me, please? " the young man asked.
"OK! Just put the pants on the sofa. " his mother and sisters all answered.
After the mother finished washing the dishes, she shortened the pants by two inches and put back on the sofa. But she didn't tell her daughters about it.
Later, after supper, the elder sister remembered her brother's pants. So she picked them up and shortened by two inches, too.
The younger sister went to the cinema after supper. Three hours later, when she came back and saw the pants on sofa, she remembered what her brother said. Then she cut two inches off the legs of the pants and went to sleep.
