— have you learnt English? —Since .A. How farB. How longC. How oftenD. How soon

问题补充：

— have you learnt English? —Since .

A. How far

B. How long

C. How often

D. How soon

答案：

A. How far

(答案→)B. How long

C. How often

D. How soon

解析：句意：你学习英语有多久了？从到现在。A多远B多久C多久一次D多久以后，故选B。