题目内容：

四年级英语智力题
What has four feet sitting on four feet waiting for four feet?
The first "four feet" stands for(指代）__________(用英语回答）
The second "four feet" stands for(指代）__________(用英语回答）
The third "four feet" stands for(指代）__________(用英语回答）

优质解答

A cat is sitting on a chair waiting for a mouse.
额.