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

疑問詞辨析。How many多少個； How long多長； How often 多久一次； How far多遠。根據答語可知詢問的是一段時間，故選how long。選B。