问题补充：
---Have we food?.
--- Yes, . We’d better buy some.
A. run out of; we have run it out
B. run out of; our food has run out
C. run out; our food has been run out
D. run out; our food has run out
答案：
A. run out of; we have run it out
(答案→)B. run out of; our food has run out
C. run out; our food has been run out
D. run out; our food has run out
解析：考查动词用法。run out of为及物动词词组，故后应当接物；而run out为不接物动词词组，故不能用被动语态，根据题意，应选择B。
