Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.
Correct answer; (A) that flourished at the same time as the civilizations
My answer (D) flourishing at the same time as those did
我觉得是D,可答案是A请指教，谢谢!
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