A：Would like to come to birthday party？

B：（1）　　

A：When is it？

B：（2）　　

A：What do you usually do at birthday party？

B：（3）　　

A：Do you sing Happy Birthday？

B：（4）　　

A：Who is coming too？

B：（5）　　

A． This Saturday． B． Yes，I'd love to． C． Betty． D． Yes， we sing it in English． E． We usually eat birthday cake．