You can hardly imagine the ______ they went ______.A.suffering; throughB.concern; throughC.recovery; overD.worry; over
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A解析试题分析：考查名词辨析和定语从句。句意：你几乎想象不到他们经历的痛苦。suffering痛苦，苦难，折磨；concern关心；recovery恢复；worry担忧；go through经历，经受；go over仔细检查。故选A。
考点：考查名词辨析和定语从句