从方框中选择适当的句子补全对话。

A. Where is he from? B. Who is this boy? C. Good idea! D. I will go to China to visit him. E. Really?

A: Come on, Susan. Look at my photos.

B: They are great!

A: He's my new pen pal.

B:

A: China.

B: China is a great country.

A: Yes.

B: Can I go with you?

A: Why not?

B: Great! I'm excited.