The Big Ben, we visited during a recent trip to Britain, is one of London’s tourist attractions.
A. which
B. what
C. that
D. where
网友回答
(答案→)A. which
B. what
C. that
D. where
解析：这是非限制性定语从句，先行词是The Big Ben，定语从句中缺少宾语，where不能作宾语，故排除D； what不能引导定语从句；that不能引导非限制性定语从句，故选A.