It is reported that two monkeys——(flee) from the zoo last night.

问题描述:

It is reported that two monkeys——(flee) from the zoo last night.
为什么用一般过去时?不用过去完成时吗?

(一般过去时)指现在的过去,句子的情景是现在.(过去完成时)指过去的过去,句子的情景就是过去.显然报道说是昨晚发生了什么,这是过去式,如果说昨天报道说前晚发生了什么,就是过去完成式,这是我的理解,