---How long?---For two years.A. have you left my hometownB. have you come to the cityC. D.

问题补充：

---How long?

---For two years.

A. have you left my hometown

B. have you come to the city

C.

D. are you going to your hometown

答案：

A. have you left my hometown

B. have you come to the city

(答案→)C.

D. are you going to your hometown

解析：---你要在城市呆多久?---