They told me that they ___ the task yesterday.

问题描述:

They told me that they ___ the task yesterday.
A finished B have finished C had finished D would finish
这道题正确答案是哪个,请详细说明,谢谢!

A finished
因为宾语从句中有“昨天”这个时间状语,所以只能用“一般过去时”,不能使用“过去完成时”