AIDS is said ______ the biggest health challenge to both men and women in that area over the pas

問題詳情

33. AIDS is said ______ the biggest health challenge to both men and women in that area over the past few years.
(A). that it is
(B). to be
(C). that it has been
(D). to have been

參考答案

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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