◎ 题干
Food supplies in the flood-stricken area______.We must act immediately before there's left.
[     ]
A. have run out  
B. are running out
C. have been run out  
D. are being run out
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Food supplies in the flood-stricken area______.We must act immediately before there's left. [ ]A. have run outB. are running outC. have been run outD. are…”主要考查了你对  【动词短语】【现在进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。