Mrs Green is eighty years old.She has a club.There are now ten people in the club and most of them are old people like Mrs Green.They walk three miles every day.They walk very quickly because it is a good way to keep healthy.When it is too cold to walk ouside in winter,they have to walk in the club.They all wear T-shirts with these words on them,"I like walking".something interesting happened to the walking club one day.A dog began to walk after them soon,and then there were two more dog.Now the walking club has both people and dogs walking every day.

mile[maɪl]：英里
quickly[ˈkwɪklɪ]：迅速
begin[ˈbeɡɪn]：开始