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AIDS is said______the No. 1 killer of both men and women over the past few years in that region.
A.being
B.to be
C.to have been
D.having been

A.
A.being
B.to
B.to
C.having

【参考答案】

C
从时间状语“overthepastfewyears”可知此处要用现在完成时,即besaidtohavebeen。
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