_____they to cut down the cost of advertising, the cost of production______significantly fall.

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问题 _____they to cut down the cost of advertising, the cost of production______significantly fall.

选项 A、Are; will
B、Were; shall
C、Are; should
D、Were; would

答案D

解析 本题考查虚拟语气。句意为“如果他们降低了广告成本,生产成本就会明显下降”。表示与现在事实相反,从句谓语用动词过去式(be用were),主句谓语用would/should/could/might+动词原形;虚拟条件从句中含有were时,可省略if,并把were移至主语之前。该从句的正常语序是If they were to cut down the cost of advertising。故本题选D。
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