把下列句子重新排列成一段完整的对话，将序号填在括号内。

( ) Thank you.          

(     ) Excuse me, Helen.

(     ) Can I have a look?    

(     ) What's that in your school bag?

(     ) A rubber.            

(     ) How nice!

(     ) Is that your rubber?    

(     ) OK. Here you are.

(     ) Yes, it's my new rubber.