----Could you lend me some of your paper?--Sorry . Mine is .A. using upB. running outC.

问题补充：

----Could you lend me some of your paper?

----Sorry . Mine is .

A. using up

B. running out

C. running through

D. giving out

答案：

A. using up

(答案→)B. running out

C. running through

D. giving out

解析：本题回答语的含义是我的纸张用完了，run out可以表示用完或耗尽的意思，故本题选B。