问题补充：
Jane established a program, young people to take part in activities promote greater concern for the environment．
A. to encourage; where
B. having encouraged; where
C. encouraging; that
D. encouraged; which
答案：
A. to encourage; where
B. having encouraged; where
(答案→)C. encouraging; that
D. encouraged; which
解析：第一空用现在分词作状语，因为encourage与Jane为主谓关系；第二空用定语从句修饰activities，关系词that在从句中做主语。句意为“ 简建立了一个项目鼓励年轻人加入提升环保意识的活动”
