阅读下列短文，按照句子结构的语法性和上下文连续的要求，从各题所给的A、B、C和D中选出最佳选项．

    More than 700 years ago，Scotland （苏格兰） was fighting with England．The king of England wanted to 1 Scotland．He had a strong army so it was2for the Scots to fight．They lost many times，King Robert of Scotland had to run from the English army．

    One rainy day，King Robert lay in an old house．He thought that he was not good enough to be king．He was so3that he didn't even see a spider（蜘蛛）near him．He 4when he saw the spider climbing．It was trying to climb up its web at the top of the house but it fell down．

    "How sad"thought King Robert．"The spider is like me．It's not 5enough．"He watched while the spider climbed up again．It fell down a second time．

    "Be careful，little spider，or you might die，"he said．"Life is so hard．You'll never get back to your web．"But the spider 6again and again．King Robert watched while it 7climbed back to its web．After an hour，the spider got do the web．

    "You are such a great 8，"he said．"If you can keep trying．I can too．I must keep on fighting．I won't let the English win．"His 9grew strong and they 10the English army．Scotland was free．

    Nobody knows if this is a true story．Many parents tell it to their children because they want them to keep trying．