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

题目简介

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

题目详情

AIDS is said __________ the biggest health challenge to both men and women in that area over the past few years.
A.that it isB.to be
C.that it has beenD.to have been
题型:单选题难度:偏易来源:不详

答案

 D。
“某人(某物)+is said+不定式”是一个很有用的句式,其意为“据说”,又如:The company is said to be in trouble. 据说这家公司遇到了困难。再根据句中的over the past few years可知,不定式要用完成式。

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