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AIDS is said________the biggest 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

 

D

【解析】

试题分析:句意为:据说,在过去的几年中,艾滋病对于那个地区的男女来说已是最大的挑战。It is said that从句可转为sb./sth. be said to do/to be doing/to have done的形式。由此可淘汰A、C两项,由于句子中的时间状语over the past few years要用完成时,所以淘汰B项选出正确答案D。

考点: 考查固定句型

 

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