看图片,选择正确的单词补全对话,只写序号。
A.mother | B.big | C.thin | D.little |

A: Look at the father panda. It's 1. ________ .
B: And this is the 2. ________ panda. It's very fat.
A: Look! The baby panda is 3. ________ .
B: Yes, it is. And Look at the sister panda. It's very 4. ________ .