.If the firms failed to make enough money, they would .
A. close down
B. call off
C. turn down
D. set off
网友回答
(答案→)A. close down
B. call off
C. turn down
D. set off
解析：close down意为“关闭”。根据所提供的情景“If the firms failed to make enough money”可判断出如果这些公司无法得到足够的钱,它们就会倒闭。call off 意为“放弃”；turn down 意为“拒绝”；set off 意为“出发,动身”。