问题补充:
They said that not all trainees would be suitable for the jobs they were being trained.
A. in which
B. for which
C. in that
D. for that
答案:
A. in which
(答案→)B. for which
C. in that
D. for that
解析:本题考查定语从句。介词后不可接关系词that,根据句意可知他们训练是为了工作,for表示目的。句意:他们说并非所有的培训者都适合他们所培训的工作。