问题
选择题
--- has your brother studied in New York?
---For two years.
A．How far
B．How often
C．How soon
D．How long
答案
答案：D
考查疑问词：A. How far多远，B. How often多久一次，C. How soon 多快D. How long多长时间，根据答语可知是个时间段，它常用来回答以how long引导的特殊疑问句。选D。