新东方补充教材452T

alex

452.During the Renaissance, scholars were uncertain as to be location of Troy, and by the eighteenth century many historians [U]doubted that Troy had ever existed.[/U]
A.
B. doubt that Troy has ever existed
C. were in doubt as to the existence of Troy
D. were doubtful concerning Troy's existence
E. had doubts about Troy's ever existing

从简洁原则看，E应该优于A，请问E有何问题？

justag

"existence" is the noun form of exist, why use "existing" to replace it? The real noun form is prefered to "v+ing" when the real noun form exists~ But 'Troy's existence' or the 'existence of Troy' doesn't have sense of time, which is not as good as A.