---Jack have you been away from your hometown?---Since the end of last February.A. how l

问题补充：

---Jack, have you been away from your hometown?

---Since the end of last February.

A. how long

B. how soon

C. how far

D. how often

答案：

(答案→)A. how long

B. how soon

C. how far

D. how often

解析：考查情景交际与现在完成时。“杰克，你离开家乡多久了？”“自从去年二月底。”对一段时间提问，用how long；how soon是对将来提问；how far对距离提问；how often对频率提问。故选A。