补全对话

A. what's the cartoon about B. What are you doing? C. Don't be sad. D. How do you feel? E. Why are you sad? F. You are happy.

Amy: Hi, Sam. 

Sam: I'm watching a cartoon.

Amy: Oh, ?

Sam: It's about animals. It's interesting.

Amy: But I'm sad.

Sam: 

Amy: Because it's rainy. I can't go to the park today.

Sam: You can go next time. Let's watch the cartoon together.

Amy: Good idea!