Harry lived in London for three months, he learned some English.
A. which
B. in which
C. that
D. during which time
网友回答
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。