問題詳情

【題組】19.
(A) no sooner had we understood…are we able to
(C) only by understanding…can we
(B) once we understand…can we
(D) upon understanding…do we

參考答案

答案：C
難度：適中0.5
統計：A(1),B(1),C(2),D(0),E(0)