选择合适的选项补全对话。

A. The balloons are flying away. B. Where is your mother? C. Thank you. D. Yes, I am. E. I want a big birthday cake and some balloons.

Nancy:

Lingling: She is buying things at the supermarket.

Nancy: Are you going to have a birthday party?

Lingling: My mother is buying things for me.

Nancy: What do you want?

Lingling:

Nancy: Can she carry everything?

Lingling: No, she can't. Look!

Let's go and help her.

Nancy: OK. Hurry up!

Lingling: