请问比较对象应该怎样确定啊

yanjie0112

139. In no other historical sighting did Halley’s Comet cause such a worldwide sensation as did its return in 1910–1911.
(A) did its return in 1910–1911
(B) had its 1910–1911 return
(C) in its return of 1910–1911
(D) its return of 1910–1911 did
(E) its return in 1910–1911
比如把每个选项带入之后  可以知道as后是什么  应该怎么找as前是什么在跟它比较呢？