英语在线改错...大神帮忙...

My grandpa told me a story, which was very interesting.One hot summer day,a fox was taking a walk when he noticed a bunch of grapes that just turned ripe, hanging high above. He felt extremely thirsty, so he took a step back, then ran forward and jumped, but he missed the grapes.Though he was a bit disappointed, but he made up his mind to try again.He tried with all his strength.But again he missed the grapes. Again and again he tried, but he gave up in the end. And he walked away with his nose in the air,saying,"I didn't want those old grapes anyway.I'm sure they are sour."