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【题目】Food supplies in the flood-stricken area _______. We must act immediately before there’s none left.

A.have run outB.have been run outC.are running outD.are being run out

【答案】C

【解析】

考查动词时态及语态。句意:在洪灾区供应的食物快用完了,在用完之前我们必须立刻采取措施。are running out表示将要用完,run out不能用被动形式。故排除BD;选项A表示已经用完,不符合语意,故选C

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