补全对话，每空一词。

A：Who's your_1  friend?

B：My best friend is Xiao Li,but last week we had a big fight and now she doesn't talk to me.

A：How did it  2  ?

B：It all started when she asked me    3  she could copy my homework.

A：Why did she want to do that?

B：She said she had forgotten to do    4    

A：What did you do then?

B：I told her that it was a   5   idea.

A：Did she think so?

B：No,she got really mad at me.

1.________  2._________  3.___________  4._______  5.__________