Dr. Josh has started a social enterprise young people can get involved in helping the munity.
A. which
B. where
C. that
D. when
网友回答
A. which
(答案→)B. where
C. that
D. when
解析：考察定语从句。本题的先行词是a social enterprise,定语从句的结构非常完整，所以使用关系副词，enterprise企业，单位；结合句意可知B正确。句意：Josa博士开办了一家企业，在这里年轻人能够参与帮助社区。