Question

--You speak English so well. ______ have you learned English?
--For 5 years.

A．How many

B．How long

C．How often

D．How far

Answer 1

B

疑问词辨析。How many多少个； How long多长； How often 多久一次； How far多远。根据答语可知询问的是一段时间，故选how long。选B。