问题描述：
in answer to
The law passed _____ the retirement of the public.
A.in answer to B .in response to C.in return to D.in reward to
in answer to和in response
The law passed _____ the retirement of the public.
A.in answer to B .in response to C.in return to D.in reward to
in answer to和in response
问题解答：
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