根据对话内容，在每个空白处填入一个适当的句子使对话完整，合乎情景。
Diana: Hello! Elena. 小题1:___________________________
Elena: Yes, it is.
Diana: Happy birthday to you!
Elena: 小题2:__________________________ I’ll have a birthday party at home tonight. Would you like to come?
Diana: 小题3:_________________________ I want to give you a present. 小题4: ________________________
Elena: Yes, I do. But my mother buys a white T-shirt for me.
Diana: What about a birthday cake?
Elena: Great. I love cakes. 小题5:________________________
Diana: My birthday is on December 20. You can come to my birthday party on that day.
Elena: OK.
