1. (2019·毕节) 阅读短文，从短文后各题所给的 A、B、C、D 四个选项中，选出能填入空白处的最佳选项。

    One day, when the Lion was asleep at noon, the little Mouse came running by. He was in a 1to get home. Because the Mouse didn't see the Lion, he ran 2 the Lion's nose. The Lion opened his eyes, shouting "I'm going to eat you! You 3  me up!" "Dear Lion, please do not eat me! I shall4  do it again and I shall never forget your kindness. Maybe someday I will5 you back!" The Lion was6 the idea of the Mouse. Then he said, "I think I will let you go. I am not7 anyway." The little Mouse was so happy! He ran8 to his home. A few days later, the Lion9 into a net (网)by accident. The Lion shouted, trying to get free. Just then, the little Mouse happened to pass by. "I will help you, dear Lion." The little Mouse cut the net with his little teeth. It10 him a long time. At last, the Lion was free! The Lion and the Mouse became best friends. The Lion said, "A little friend can be the best friend of all!"