The worst accident occurde in,that 170 people killed when a passenger plane crashed on August 22.
问题描述：
The worst accident occurde in,that 170 people killed when a passenger plane crashed on August 22.
The worst accident occurde in,（）170 people killed when a passenger plane crashed on August 22.
这个空应该添什么,为什么?
答
Russia
8月22日,俄罗斯一架飞机在乌克兰东部地区坠毁,此次坠机事件共造成170人罹难.