---is your office to your home?-It’s about 5 kilometers away from hereA. How far B.

问题补充：

---is your office to your home?

---It’s about 5 kilometers away from here.

A. How far B. How long C. How often

答案：

解析：根据答语的内容It’s about 5 kilometers away from here，可知问的是距离，故选A，表示多远的意思。