The schools themselves admit that not all children will successful in the jobs they are being trained.
A. in that
B. for that
C. in which
D. for which
网友回答
A. in that
B. for that
C. in which
(答案→)D. for which
解析：句意：学校自己承认并非所有的学生都能在他们所培训的专业上有所成就。这里是定语从句，先行词是jobs，关系词在定语从句中作介词的宾语，that不能作介词的宾语，介词的选用根据从句的谓语动词或先行词来判断，故选D。