问题
选择题
---________ have you played the piano? ---For four years.
A How often B How long C How much D How many
答案
答案：B
本题考查特殊疑问词。How often多久一次； How long多长时间；How much多少；How many多少。句意：——你弹钢琴有多长时间了？——4年。
搜题请搜索小程序“爱下问搜题”