问题补充:
The reporter said that the UFO
答案:
A when 引导时间状语 表当...时候,而那时候同时发生的事,则用进行时
======以下答案可供参考======
供参考答案1:
A当目击者看到UFO时,它正在从东往西飞
注意,这是过去进行时
供参考答案2:
The reporter said that the UFO ________east to west when be saw it.
A.was travelling B.travelled
C.had been traveling D.was to travel.
选b对吗?为什么?
选A