We have to try every means to _____ the costs of the project.
【正确答案】 C
【答案解析】解析:考查词组辨析。bring down意为“降低,打倒”;bring off意为“完成,使成功”;bring up意为“养育,培养”;bring back“使记起,归还”。由此可见,选项C为正确答案。