The three men----police uniform try to open the door with a

The three men____police uniform try to open the door with a knife and it___.
A.with,work B.with,works C.in,woks D.in,work

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【答案】C
【解析】
①穿着什么衣服,用介词in,
in police uniform
穿警察制服;
②it 是单数所以用works
it works 熟语
生效,起作用