根据上下句意思,在每个空白处填上一个适当的句子,使对话的意思连贯、完整
A：Excese me,are you Lucy?
B：No,I am Lily.1_______________________?
A：My name is Li Jia.2______________________.
B：England.Are you from Chia?
A：Yes.Welcome to Beijing!
B：Thank you.How old are you,Li Jia?
A：3___________________________.
B：4___________________________?
A：What class are you in?
B：I'm in Class 9,Grade 7.
A：We are in the same class.
B：That's good.5____________________?
A：That's our teacher ,Mr.yang.
B：Oh,I see.