Question

With all the food supply ___, the researchers had to put an end to the wildlife protection project and returned home.

A．running out

B．to use up

C．run out of

D．using up

Answer 1

A

考查with的复合结构，with +宾语+现在分词，表示主动进行，句意：随着所有的食物供应快要用完了，研究人员不得不结束野生动物保护工程回家。run out用完，所以选A。