题目内容
【题目】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
【答案】 B
【解析】考查时态、语态。句意:洪灾地区的食物快用完了,我们必须在没有剩余食物之前立即采取措施。词组run out 意为“用完”,没有被动形式,所以排除C、D两项。根据第二句语境可知食物快用完了,故用现在进行时表将来,所以选B项。
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