can you tell me something about the accident ____ yesterday A that happened B happening

问题描述:

can you tell me something about the accident ____ yesterday A that happened B happening
我觉得两个都对 一个是定语从句 一个是非谓语动词

A that happened
因为是过去(昨天)发生的事情
happening应指正在发生或一直发生的事情