情景交际。
根据对话的情景，填上适当的句子，使对话完整通顺。
A: Good morning, Zhou Jun.   
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:   
B: Mr. Zhao. Look! He is playing basketball there.
A: Nice talking to you. Thank you.