Lesson 21 Fur and Paws 第21课 毛和爪子 1. What is it? 1. 它是什么? A cat has fur, paws and a tail. 猫有毛,爪子和尾巴。 fur 毛 paws 爪子 tail 尾巴 2. Let's sing a song. 2. 来唱一首歌。 I saw a dog in a purple hat, On...