問題詳情

24. Unless economic conditions _______ next year, there will be widespread unrest across the world.
(A) will improve
(B) improve
(C) has improved
(D) will have improved

參考答案

答案：B
難度：簡單0.715517
統計：A(22),B(166),C(11),D(17),E(0)

用户評論

【Dory Chao】評論

假設語氣或條件句，前一個句子要比後面句子早一個時態。