根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。

A: Good morning, ZhouJun. ？

B: I usually come to school on foot.

A: ？

B: Six. I have four classes in the morning and two classes in the afternoon.

A: ？

B: My favorite sport is basketball.

A: ？

B: Because it's very exciting(令人兴奋的).

A: Who is your P. E. teacher?

B: Mr. Zhao. Look! He is playing basketball there.

A: Nice talking to you. Thank you.

B:.