-________hasthisfoodstorebeeninbusiness?-Since2001．A.HowlongB.HowoftenC.H

发布时间：2020-08-04 16:28:38

-________ has this food store been in business?-Since 2001．A.How longB.How oftenC.How oldD.How soon

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A解析因为根据上下文，对since短语的时间状语提问用how long，所以正确
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