补全对话：A:Maria,what are you reading about?B:oh,(1)_______________ A:Oh?what are they?

补全对话：A:Maria,what are you reading about?B:oh,(1)_______________ A:Oh?what are they?
B:First,(2) ____________ A:Emm .I think the rule is reasonable(合理的）.As a student.we should go to school on time.The next?
B:We can't eat or speak loudly in the classroom.A:I see.(3)___________________
B:We can't listen to music in the classroom.And(4)____________,or we may hit others.A:I remember now.(5)________________
B:You are welcome