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

答案：登入後查看
統計： A(55), B(244), C(29), D(45), E(0) #392080

詳解 (共 1 筆)

#692030
假設語氣或條件句，前一個句子要比後面句子早一個時態。
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