【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
在线课程【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B、D；选项A表示已经用完，不符合语意，故选C。