问题补充:
Harry lived in London for three months, he learned some English.
A. which
B. in which
C. that
D. during which time
答案:
A. which
B. in which
C. that
(答案→)D. during which time
解析:考查定语从句,先行词是three months,定语从句的时间状语是during three months,用介词during +which time引导定语从句,句意:Harry在伦敦生活了三个月,在那期间,他学习了一些英语。选D。