根据对话内容，选择合适的句子填空。

A. What are you going to take?

B. Where are you going to go?

C. Who is going to go?

D. When are you going to go?

Amy ①? 

Sam: I'm going to go to Beijing.

Amy ②?

Daming: Clothes, shoes ….

Sam: ③ ?   

Daming: At six o'clock tomorrow morning.

Sam: ④ ?   

Daming: It's me.