根据对话内容补全所缺句子
A:
B:YouralarmclockIsitonthetable?
B:Isitonthesofa?
A:()thanks,Mom.
B:Takeittoyourbedroom,please.
A:OK,Mom.()
B:Yourkeys?Theyareinthedesk.
B:No,theyaren't.Theyareyoursister'smathbooks.