His strange behavior confirmed his neighbors in their______that he was guilty.
【正确答案】 A
【答案解析】本题是说他奇怪的行为使他的邻居们证实了对他犯罪的怀疑。A项suspicion“猜疑，怀疑”符合题意。其他三项doubt“怀疑，疑惑”，estimate“估计”，imagination“想象”都不正确。