高中英语单选the manager didn't hear ------because there was too much noise in the workshop

问题描述:

高中英语单选the manager didn't hear ------because there was too much noise in the workshop
A what was the director saying B what the director was saying Cwhat the director had said Dthe director was saying what

c,句意:
经理没有听清董事长说的话,因为车间里的噪音太大了.
从句子中看出表示已经发生过的事情,而且是说在前,听到在后.所以用过去完成时态.