問題詳情

The roof of the auditorium _______ two hours before the concert started; fortunately, no one was killed.
(A)declined
(B)collapsed
(C)reduced
(D)escalated

參考答案

答案:B
難度:簡單0.72619
統計:A(8),B(61),C(4),D(5),E(0)

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