题目：
补全对话。
A: Hello, Peter! 1. ______ are you?
B: I'm twelve years old. What about you'?
A: I'm twelve years old, 2. ______
A: 3. ______?
B: My birthday is October l0th.
A: Oh, next Saturday is your birthday. 4. ______!
B: Thanks a lot. Can you come to my 5. ______
A: Yes, I would like to. Shall I ask Xiao Ming to go to your birthday party?
B: Sure. We'll have a good time on that day.
答案：
1. How old
2. too
3. When is your birthday
4. Happy birthday to you
5. birthday party
