单选题
It (aims to) establish a minimum list of standards that (ought to) (include) in all codes of conduct (covering) labor practices.
A、
aims to
B、
ought to
C、
include
D、
covering
【正确答案】
C
【答案解析】
include与先行词a minimum list of standards是被动关系，所以应将include改为be included。
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