The schools themselves admit that not all children will be successful in the jobs ________ they are being trained.
A.in thatB.for thatC.in whichD.for which在线课程D
介词+关系代词引导定语从句。句意：校方人员自己承认并非所有的孩子都会在为之培训的工作中获得成功。in that=becauae; for that是语法错误，that前通常不能加介词，except that/but that/inthat例外；in which意为“在这些工作中”。