根据上下文内容和首字母提示补全短文.

根据上下文内容和首字母提示补全短文.
Robert is an old man in a town.One day,some of Robert's friends were talking about youny people in their town.They all a______(1)that old people were c______(2) than young people.
Then one of them said,"But young people are s______(3) than old people."All of them agreed with him e______(4) Robert.He thought he was as strong as ______(5).Robert said,"In one c______(6) of my garden,there's a big stone.When I was young.I couldn't m______(7) it.I wasn't strong e_______(8).Now I'm old and when I try to move it,I s______(9) can't move it.That's w______(10)I'm as strong as before."
第5个空
b_______