10. A: How long has Chris moved to Arizona?
11. B: ……………………………………………………2 years.
12. A: How long………………………………James and Lily (graduate)……………………………….from the university?
13. B: …………………………………………………………………..2012.
14. A: How long ………………………………………….. (you / study) here?
15.. B:……………………………………………………… several months.