阅读下面的对话，用方框中的词或词组填空，每个词或词组只能用一次。

A: Hello,  Jack.  Come here,  please.  Do you know the   ____    in school?
B: Yes,  Mr.  Brown.  First we   ____   wear hats in school. 
A: That's right. 
B: Don't arrive late for   ____  . 
A: Good.  What  ____  ?
B: Do we    ____  eat in the dining hall?
A: No,  you don't.  You  ____ eat outside. 
B: And we can   ____ music outside,  but not in the classrooms. 
A: Yes.
B: We can't    ____   anyone. 
A: Yes.  You should be friendly.  Can we    ____    in the hallways,  little boy?
B: No.  It's dangerous. 
A: You're right,  my little boy.  Then why did you run in the hallways?
B: Sorry,  Mr.  Brown.  I won't   ____   school rules again.