给定一个简短的英文段落，请将段落中的动词改为过去式。
The sun rises in the east and sets in the west. I walk to the store and buy some fruit. My cat jumps on the table and knocks over a vase.
The sun rose in the east and set in the west. I walked to the store and bought some fruit. My cat jumped on the table and knocked over a vase.