----Many online games are full of violence, which do harm to the development of the children.
----And that’s my concern lies.
A. what
B. which
C. where
D. that
网友回答
A. what
B. which
(答案→)C. where
D. that
解析：考察表语从句。从句的结构很完整，主语是my concern，lie是谓语动词，也是一个不及物动词。Where my concern lies是一个表语从句。意为：那就是我担心的地方。故C正确。