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
网友回答
A. have run out
(答案→)B. are running out
C. have been run out
D. are being run out
解析：此题考查时态。“在遭受洪水袭击的地区，食物供给快完了。我们必须赶在(食物)一无所剩之前立刻行动起来。”从句子后半句我们可以知道受灾灾区食物还有少许，还没有到山穷水尽的地步，只是所剩已经不多。所以我们选用现在进行时表示“即将”。另外，run out这个词组没有被动语态形式。故不选D。