单选题 We had been taken over by another firm, and a management ______ was under way.

【正确答案】 A

【答案解析】[解析] A项clean up“清洗，打扫”，可引申为“(对不法行为的)清除”，根据句意：我们已被其他公司所掌控，对不法行为的清除管理势在必行，故选A项。B项setup“安排，组织”；C项breakout“逃走，(军事)突围”；D项takeout“外卖”，均不符合题意。