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。