OG12-SC-85

nancy5130

Salt deposits and moisture threaten to destroy theMohenjo-Daro excavation in Pakistan, the site of an
ancient civilization that flourished at the same timeas the civilizations in the Nile Delta and the rivervalleys of the Tigris and Euphrates.

(A) that flurished at the same time as thecivilizations

(B) that had flourished at the same time as hadthe 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

de中如果those变为that 可以吗？为什么不可以改为ing形式？