The general manager often looks through the sales his men have kept records in different branch panies.
A. where
B. which
C. of which
D. when
网友回答
A. where
B. which
(答案→)C. of which
D. when
解析：考查定语从句。句意“总经理总是浏览各个分公司的销量记录。”keep record of...“对......作记录”。故选C。