_______, I suppose, and the housing problems for about 280,000 low-ine families in this area could be settled.A.If you double your effortsB.So long as you keep your spiritsC.A bit more effortsD.Making greater efforts
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C解析此句考“祈使句+and+ 陈述句”句型。在这个句型中，前面的祈使句如果带有比较级修饰名词，可将谓语动词省略，成为“比较级+名词+and+陈述句”结构。