Boys and girls, matters your study surely need to be dealt with carefully.
A. relating to
B. relating with
C. related to
D. related with
网友回答
A. relating to
B. relating with
(答案→)C. related to
D. related with
解析：考查过去分词做定语，be related to是“和…有关”，作定语时用过去分词，相当于which are related to your study，句意：同学们，和学习有关的事情需要认真处理。选C。