问题补充:
There’s a feeling in me we’ll never know what a UFO is – not ever.
A. of which
B. which
C. that
D. what
答案:
A. of which
B. which
(答案→)C. that
D. what
解析:句意:我有种感觉,我们将永远都不知道不明飞行物到底是什么东西。这里是that引导的同位语从句,它在从句中不作成分,先行词是feeling,同位语从句that we’ll never know what a UFO is – not ever.来解释它的内容,其他的连词必须在同位语从句中做成分,而这里不缺少成分,故选C。