Aids is said_____ the biggest health challenge to both men and women over the past few years.A.that it is B.to be C.that it has been D.to have been
问题描述：
Aids is said_____ the biggest health challenge to both men and women over the past few years.
A.that it is B.to be C.that it has been D.to have been
答
3楼的完全正确 选D
答
D
答
据说…… 有两种表达法：1 sth is said to be 2 It is said that+从句
又句中有明显的暗示：over the past few years 固定用完成时.所以选D.
C 应该为：It is said that aids has been the biggest health challenge
to both men and women over the past few years.
答
C
宾语从句，sth. said that +从句
、