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.
80. 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.
A) that flourished at the same time as the civilizations (B) that had flourished at the same time as had the civilizations (C) that flourished at the same time those had (D) flourishing at the same time as those did (E) flourishing at the same time as those were
answer is A.
Quetions: 1) Can the 2nd "as" in A be replaced by "that"? In OG 174, I saw "(C) A letter by Mark Twain, written in the same year that The Adventures of Huckleberry Finn was published".
2) In A, I think there should be a "did" before "the civilizations".
3) In A, can "the civilizations" be replaced by "those"?