問題詳情

三、語法選擇：10%21. Only a small percentage of water in these areas _______ drinkable.
(A) has
(B) are
(C) were
(D) is

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)