問題詳情

21. As a Nobel-prize winner, he had devoted all his life to ______ for peace.
(A) guaranteeing
(B) struggling
(C) adopting
(D) injuring

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)