单选题
It is important to provide an environment ______ people are encouraged to make suggestions at all levels of the company.
A、
from which
B、
on which
C、
in which
D、
for which
【正确答案】
C
【答案解析】
[解析] 考查定语从句中介词的用法。先行词为an environment,可以与之连用的介词应为in,即in an environment。
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