Question

【题目】Her husband had （build）a large business during his lifetime.

Answer 1

【答案】uilt up
【解析】句意：她的丈夫在有生之年建立了一个庞大的企业。build up固定短语，”建立，逐步增强“，根据had可判断这是一个过去完成时的句子，故填built up。