问题补充:
-- have you been at this factory?
-- Since 2000.
A. How long
B. How much
C. How often
D. How soon
答案:
(答案→)A. How long
B. How much
C. How often
D. How soon
解析:本题考查特殊疑问词。How long多长时间;How much多少;How often对频率提问;How soon多久。句意:----你在那家工厂已经呆了多久?----自2000年以来。