Food supplies in the flood-stricken area...

Food supplies in the flood-stricken area ______. We must act immediately before there’s none left.

A．have run out	B．are running out
C．have been run out	D．are being run out

B 【解析】试题分析：句意，在发生洪水的灾区食品供应即将用完。我们必须在全部用完之前采取行动。run out为不及物动词短语，不能使用被动形式，由此可排除C和D两个选项。A选项为现在完成时，原题中想要表达将要用完，还没有用完，所以不合题意，B选项为现在进行时态，可以表示将来，符合题意，故选B。考点：时态考查题以及run out的用法。

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试题属性

题型：单项填空
难度：中等