问题
选择题
---________do you spend _English learning every day? ---For about an hour.
A．How long, in
B．How many times, on
C．How often, on
D．How long, on
答案
答案：D
For+ 一段时间，用How long提问，spend + 时间 + on +名词，题中English为名词，所以选D。