He soon found himself his new co-workers.
A. in harmony of
B. in the harmony of
C. in harmony with
D. in the harmony with
网友回答
A. in harmony of
B. in the harmony of
(答案→)C. in harmony with
D. in the harmony with
解析：in harmony with 与……和睦；与……和谐．为一固定短语。