問題詳情

【題組】49.( ) To make tall buildings more accessible to their users, the elevator .
(A) invented
(B) had invented
(C) was invented
(D) would have invented

參考答案

答案：A[無官方正解]
難度：非常困難0.166667
統計：A(1),B(1),C(4),D(0),E(0)