It is very mon that former people have difficulty in modern life.
A. sticking to
B. relating to
C. adjusting to
D. connecting to
网友回答
A. sticking to
B. relating to
(答案→)C. adjusting to
D. connecting to
解析：考察动词词组。Stick to坚持 relate to 与……有关系 adjust to 适应 connect to 连接
句意为，以前的人无法适应当代生活是很普遍的现象。