选择合适的选项补全对话。
Nancy: 【小题1】
Lingling: She is buying things at the supermarket.
Nancy: Are you going to have a birthday party?
Lingling: 【小题2】 My mother is buying things for me.
Nancy: What do you want?
Lingling: 【小题3】
Nancy: Can she carry everything?
Lingling: No, she can’t. Look! 【小题4】 Let’s go and help her.
Nancy: OK. Hurry up!
Lingling: 【小题5】

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.