The investigation, ______will soon be published, was made by John.
A、
at which the results
B、
the results on which
C、
whose results
D、
at whose results
【正确答案】
C
【答案解析】
解析：本题考查非限制性定语从句。关系代词在从句中做定语，只能用whose来引导，C正确。
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