从方框中选择正确的句子补全对话。

A. Happy birthday! B. Because I'm going to play football. C. Can you come to my party? D. When are you going to have your party? E. Why are you wearing a dress today?

Simon: Hello, Sally!

Sally: Because I am going to have a birthday party.

Simon:

Sally: Thank you.

Simon: Sure.

Sally: At three o'clock this afternoon.

Simon: OK.

Sally: Why are you wearing shorts?

Simon:

Sally: Have a good time!