问题补充：
—Will you lend me some paper?
—Sorry，mine .
A. is running out of
B. has been run out
C. has run out
D. has run out of
答案：
A. is running out of
B. has been run out
(答案→)C. has run out
D. has run out of
解析：run out是不及物动词词组，没有被动语态，不接宾语；run out of是及物动词词组，要接宾语，可以有被动语态。Mine has run out＝Mine has been run out of。
