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AIDS is said the number-one killer of both men and women over the past few years

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AIDS is said the number-one killer of both men and women over the past few years

AIDS is said ________ the number-one killer of both men and women over the past few years in that poverty-stricken region where no medical services are available.

A.being

B.to be

C.to have been

D.having been

试题答案

C

解析:

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