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 |
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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 |