Question

He insisted the new workers should operate the machines_____.

A.as told B.as telling C.as are told D.as they told

Answer 1

选A。
考点：方式状语从句中的省略
as told = as they were/ had been told
完整形式的时态信息：主句谓语动词【insisted】——主句用过去时态，从句只能用过去的某种时态形式（叙述客观事实和真理除外）
因此，可以直接排除其余三个答案：B,C 时态、语态错误；D 从句结构不完整。
祝你开心如意！O(∩_∩)O~~

Answer 2

A ，他坚持要求新来的工人按照他所说的来操作机器。