問題詳情

33. Columbia University _______ a school for men, but now it is coeducational, serving as many women asmen.
(A) was used to
(B)was used to be
(C) used to be
(D)used to being

參考答案

答案:C
難度:適中0.506173
統計:A(3),B(33),C(41),D(4),E(0)

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