问题
选择题
-----______ are the students talking ______?
----- A policeman.
A．What, with
B．Who, for
C．Who, to
D．What, to
答案
答案：C
talk to，后接sb，所以特殊疑问词，talk with sth或sb，前者后接，特殊疑问词为who
而后者特殊疑问词为what或who，根据这个，故选C
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