-have you been away from your hometown Janet?-- Since 5 years ago.A. How manyB. Ho

问题补充：

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

---- Since 5 years ago.

A. How many

B. How long

C. How much

D. How often

答案：

A. How many

(答案→)B. How long

C. How much

D. How often

解析：since连接时间表示的是时间长度，对此提问用how long，故本题选B。