根据上下文，补全对话，将正确答案写在横线上。（5小空，每空2分，共10分）

Sarah:Good morning, Chen Jie!
Chen :（1）_____________________
Sarah:How are you ?
Chen :（2）_____________________
Sarah:Look! My birthday cake.
Chen :（3）______________________
Sarah:I’m eight years old.      
Chen:（4）_____________________
Sarah:Thank you.
Chen:（5）______________________