题目内容
To return to the problem of water pollution, I’d like you to look at a study _________ in
Australia in 2012.
A. having conducted B. to be conducted
C. conducting D. conducted
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题目内容
To return to the problem of water pollution, I’d like you to look at a study _________ in
Australia in 2012.
A. having conducted B. to be conducted
C. conducting D. conducted