問題詳情

15．For many years, people electric cars. However, making them has been more difficult than predicted.
(A)had dreamed of
(B)have dreamed of
(C)dreamed of
(D)dream of

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)