题目内容：

Long ago the Emperor decided 1. (hold) a swimming race among 13 different animals. The order in2.they finished would decide the order of their 3.（appear）in the Chinese calendar. All the animals lined up on the river bank and were given4.task of getting to the opposite shore. The cat wondered 5.he would get across because he was afraid of water. The ox worried how he would cross 6.his poor eyesight. The calculating rat suggested that he and the cat should jump onto the ox's back and guide him across. The ox, steady and hard-working, did not notice the two animals on his back. In the meanwhile, the rat7._(run)behind the cat and pushed him into the water. As the ox came ashore, the rat jumped off and finished the race first,8.the rat got the first year 9.（name）after him and the ox got the second year. When the lazy pig reached the finish line in 12th place the race was over and he 10.(award) the final place on the calendar. From that day on, the cat, who never finished and lost his place on the calendar, became the enemy of the rat.