根据对话内容，用合适的单词填空。
A: Good morning! 1____ are you from?
B: I'm from America. Do you work in a school?
A: 2____, I do. I 3____ English.
B: Can you 4____ Chinese?
A: Yes, but only a little. I go to the Chinese classes every week.
B: 5____ you 6____ working here?
A: Yes, the 7____ here are very friendly.
B: Do you 8____ any children?
A: Yes, I have two sons.
B: Are they 9____ you in Shanghai?
A: Yes, they are in Shanghai, 10____.